Series and Number Patterns IQ Test Practice Questions

Question No 1

1/32 , 1/16 , 1/4 , 1/2 , 2 , 4 , ?

Select the correct answer


Solution!
Multiply with 2 and 4 alternatively.

Question No 2

6 , 8 , 10 , 14 , 18 , 26 , 34 , 50 , 66 , ?

Select the correct answer


Solution!
Add 2, 4, 4, 8, 8, 16, 16,....

Question No 3

0 , 100 , 6 , 94 , 12 , 88 , 18 , 82 , ? , ?

Select the correct answer


Solution!
There are two sequences interwoven.! !Add 6 starting at 0 and deduct 6 starting at 100..

Question No 4

O , R , M , T , K , V , I , ?

Select the correct answer


Solution!
Two parallel series one with skipping one alphabet in reverse order and other with skipping one alphabet in forward order..

Question No 5

20 , 30 , 45 , ?

Select the correct answer


Solution!
Multiply previous term with 1.5 to find next term..

Question No 6

B , D , G , K , P , ?

Select the correct answer


Solution!
Skip 1 , 2 , 3,... alphabets..

Question No 7

Which number is the odd one out, 3, 5, 7, 12, 17, 19

Select the correct answer


Solution!
Each of the numbers is a prime number except 12..

Question No 8

AZ , DX , HU , MQ , ?

Select the correct answer


Solution!
skip 2 , 3 , 4,... alphabets to find first character and subtract 1 , 2 , 3,... alphabets to find second character..

Question No 9

Which number is the odd one out, 41, 43, 47, 53, 61, 71, 73, 81

Select the correct answer


Solution!
Each of the numbers except 81 is a prime number..

Question No 10

X , U , Q , N , J , G , ?

Select the correct answer


Solution!
Skip 2 and 3 alphabets alternatively in reverse..

Question No 11

Which number is the odd one out, 16, 25, 36, 72, 144, 196, 225

Select the correct answer


Solution!
Each of the numbers except 72 is a perfect square..

Question No 12

7 , 10 , 25 , 94 , 463 , ?

Select the correct answer


Solution!
7*2 - 4 = 10!and!10*3 - 5 = 25!and!25*4 - 6 = 94!and!94*5 - 7 = 463!In the same way!463*6 - 8 = 2770.

Question No 13

2 , -1 , 2 , -1 , 2 , ?

Select the correct answer


Solution!
Subtract and add 3 alternatively..

Question No 14

63 , 35 , 15 , 3 , ?

Select the correct answer


Solution!
8^2 - 1 = 63!and!6^2 - 1 = 35!and!4^2 - 1 = 15!and!2^2 - 1 = 3!in the same way!0^2 - 1 = -1.

Question No 15

9 , 11 , 17 , 35 , ?

Select the correct answer


Solution!
Add 2 , 6 , 18 , 54,...!here!6 = 2*3!18 = 6*3!and!54 = 18*3.

Question No 16

78214 and 292 , 38421 and 459 , 69517 and ?

Select the correct answer


Solution!
78 + 214 = 292!38 + 421 = 459! !So, 69 + 517 = 586.

Question No 17

12 , 14 , 34 , 36 , 56 , 58 , 78 , ?

Select the correct answer


Solution!
Add 2 and 20 alternatively..

Question No 18

1 , 4 , 9 , 61 , 52 , ?

Select the correct answer


Solution!
Square 1 , 2 , 3,... and change the sequence of digits..

Question No 19

Which number is the odd one out, 8, 27, 64, 100, 125, 216, 343

Select the correct answer


Solution!
All others are perfect cube of any number but 100 is not the perfect cube of any number..

Question No 20

What four-digit number should replace the question mark? 4342 (3176) 1726, 7995 (7516) 2162, 8418 (????) 1725

Select the correct answer


Solution!
Delete the digits outside the brackets that appear twice, and insert the remaining digits in the brackets in the same order that they appear outside the brackets!8418 (4725) 1725.

Question No 21

108 , 189 , 216 , 225 , ?

Select the correct answer


Solution!
Add 81 , 27 , 9 , 3,....

Question No 22

Which number is the odd one out, 331, 482, 551, 263, 383, 362, 284

Select the correct answer


Solution!
In each number except 383, the product of first and third digits is the middle one..

Question No 23

2 , 6 , 15 , 34 , 73 , ?

Select the correct answer


Solution!
Multiply with 2 and add 2 , 3 , 4 , 5 , 6,....

Question No 24

Which number is the odd one out, 1, 4, 9, 16, 23, 25, 36

Select the correct answer


Solution!
Each of the numbers except 23, is perfect square..

Question No 25

4 , 7 , 15 , 29 , 59 , 117 , ?

Select the correct answer


Solution!
Multiply with 2 and subtract and add 1 alternatively..

Question No 26

B , L , R , T , ?

Select the correct answer


Solution!
Skip alphabets 10 , 6 , 2 , -2 , -6,....

Question No 27

1/3 , 3/7 , 6/13 , 10/21 , 15/31 , ?

Select the correct answer


Solution!
Add 2 , 3 , 4,... in numerator and add 4 , 6 , 8,... in denominator..

Question No 28

100 , 97 , 91 , 82 , ?

Select the correct answer


Solution!
-3 , -6 , -9 , -12!(Multiples of 3 are subtracted).

Question No 29

17 , 34 , 51 , 68 , ?

Select the correct answer


Solution!
Add 17 each time..

Question No 30

1 , 4 , 2 , 5 , 3 , 6 , 4 , ?

Select the correct answer


Solution!
There are two interwoven sequences.! !First starts with 1 and second with 4!Add 1 in both series.

Question No 31

T , Q , M , H , ?

Select the correct answer


Solution!
Skip 2 , 3 , 4,... alphabets in reverse order..

Question No 32

100 , 1 , 97.5 , 3.5 , 92.5 , 8.5 , 85 , 16 , ? , ?

Select the correct answer


Solution!
There are two interwoven sequences.! ! subtract 2.5, 5, 7.5 starting at 100 and Add 2.5, 5, 7.5 starting at 1..

Question No 33

3 , 6 , 9 , 12 , 15 , ?

Select the correct answer


Solution!
Add 3 in previous term to find next term..

Question No 34

3925 and 277 , 4697 and 2416 , 6257 and ?

Select the correct answer


Solution!
3 * 9 = 27! 5 + 2 = 7!(277).! !4 * 6 = 24!and 9 + 7 = 16!(2416)! !Similarly,!6 * 2 = 12!and 5 + 7 = 12!(1212).

Question No 35

1 , 2.65 , 4.3 , 5.95 , 7.6 , ?

Select the correct answer


Solution!
1.65 is adding in each term..

Question No 36

C , F , K , R , ?

Select the correct answer


Solution!
Skip 2 , 4 , 6 , 8,... alphabets.

Question No 37

2 , 14 , 32 , 56 , 86 , ?

Select the correct answer


Solution!
Add 12 , 18 , 24 , 30 , 36,....

Question No 38

0 , 1 , 4 , 9 , 16 , 25 , 36 , 49 , ?

Select the correct answer


Solution!
Add 1, 3, 5, 7, etc..

Question No 39

1 , 2 , 3 , 5 , 7 , 10 , 13 , 17 , 21 , ? , ?

Select the correct answer


Solution!
+1, +1, +2, +2, +3, +3, +4, +4, +5, +5.

Question No 40

E , H , K , N , Q , T , ?

Select the correct answer


Solution!
Skip two alphabets..

Question No 41

Find the odd man out, 3, 5, 11, 14, 17, 21

Select the correct answer


Solution!
Each of the numbers except 14 is an odd number.! !The number '14' is the only EVEN number..

Question No 42

1 , 1 , 3 , 15 , 105 , ?

Select the correct answer


Solution!
Multiply by 1, 3, 5, 7, 9.

Question No 43

Which number is the odd one out, 10, 14, 16, 18, 21, 24, 26

Select the correct answer


Solution!
All numbers are even except 21..

Question No 44

492 , 366 , 189 , 810 , ?

Select the correct answer


Solution!
8 * 1 = 8, 8 + 0 = 8.

Question No 45

Which number is the odd one out, 6, 9, 15, 21, 24, 28, 30

Select the correct answer


Solution!
Each of the numbers except 28, is a multiple of 3..

Question No 46

Which is the odd number out, 9421 , 7532 , 9854 , 8612 , 6531 , 8541 ?

Select the correct answer


Solution!
All the other numbers have their digits in descending order..

Question No 47

64521 is to 41256 as 38297 is to..

Select the correct answer


Solution!
A B C D E!6 4 5 2 1! !B E D C A!4 1 2 5 6! !A B C D E!3 8 2 9 7! !B E D C A!8 7 9 2 3.

Question No 48

7 , 12 , 19 , 28 , ?

Select the correct answer


Solution!
add 5 , 7 , 9 , 11,....

Question No 49

BZ , EW , HT , KQ , ?

Select the correct answer


Solution!
Skip 2 alphabets in forward order to find first alphabet and skip 2 alphabets in reverse order to find 2nd alphabet..

Question No 50

N , N , P , L , S , I , W , ?

Select the correct answer


Solution!
Two parallel series. One with skipping 1 , 2 , 3,... alphabets in forward order and other with skipping same alphabets in reverse order..

Question No 51

7964325 is to 6975234 , 5822139 is to 2859312 as 7469851 is to ?

Select the correct answer


Solution!
Reverse the first three digits then reverse the last four digits..

Question No 52

6 , 10 , 18 , 34 , 66 , ?

Select the correct answer


Solution!
Add 4 , 8 , 16 , 32,....

Question No 53

36 , 72 , ? , 144 , 180 , 216 , 252

Select the correct answer


Solution!
Add 36 each time..

Question No 54

0 , 7 , 15 , 24 , 34 , ?

Select the correct answer


Solution!
add 7 , 8 , 9 , 10 , 11,....

Question No 55

1 , 1 , 2 , ? , 24 , 120 , 720

Select the correct answer


Solution!
Multiply by 1, 2, 3 and so on....

Question No 56

1000 , 971.4 , 942.8 , 914.2 , 885.6 , ?

Select the correct answer


Solution!
Deduct 28.6 each time..

Question No 57

7 , 13 , 24 , 45 , 86 , ?

Select the correct answer


Solution!
Multiply previous term with 2 and subtract 1 , 2 , 3,... to find next term..

Question No 58

A , Y , W , U , S , Q , ?

Select the correct answer


Solution!
Skip one alphabet in reverse order..

Question No 59

Which number is the odd one out, 10, 25, 45, 54, 60, 75, 80

Select the correct answer


Solution!
Each of the numbers except 54 is multiple of 5..

Question No 60

71 , 25 , 83 , 37 , 95 , 49 , ?

Select the correct answer


Solution!
Two parallel series both with adding 12..

Question No 61

Which number is the odd one out, 835, 734, 642, 751, 853, 981, 532

Select the correct answer


Solution!
In each number except 751, the difference of third and first digit is the middle one..

Question No 62

1 , 1 , 2.5 , 3.5 , 4 , 6 , 5.5 , 8.5 , ? , ?

Select the correct answer


Solution!
There are two interwoven sequences.! !+1.5 starting at the first 1, and +2.5 starting at the second 1..

Question No 63

87 , 102 , 119 , 138 , 159 , ?

Select the correct answer


Solution!
Adding 15 , 17 , 19,....

Question No 64

Which number is the odd one out, 396, 462, 572, 427, 671, 264

Select the correct answer


Solution!
In each number except 427, the middle digit is the sum of other two..

Question No 65

-6 , 9 , -27/2 , 81/4 , -243/8 , ?

Select the correct answer


Solution!
Multiply previous term with -3/2 to find next term..

Question No 66

F , G , I , L , P , ?

Select the correct answer


Solution!
Skip alphabets 0,1,2,....

Question No 67

Which number is the odd one out, 1, 4, 9, 16, 20, 36, 49

Select the correct answer


Solution!
All other numbers are perfect square of numbers but 20 is not perfect square of any number..

Question No 68

5 , 2.5 , 1.25 , 0.625 , ?

Select the correct answer


Solution!
Divide previous term with 2 to find next term..

Question No 69

C , G , L , R , ?

Select the correct answer


Solution!
Skip 3 , 4 , 5,... alphabets..

Question No 70

2 , 7 , 5 , 5 , 8 , 3 , 11 , ?

Select the correct answer


Solution!
Two parallel series one with adding 3 and other with subtracting 2..

Question No 71

A , B , D , I , ?

Select the correct answer


Solution!
Multiply position of previous alphabet with 3 and subtract 1 , 2 , 3,... respectively..

Question No 72

0.67 , 0.69 , 0.48 , 0.88 , 0.29 , 1.07 , ?

Select the correct answer


Solution!
There are two series!Subtract 0.19 from the series starting with 0.67 and add 0.19 from the series starting with 0.69..

Question No 73

110 , ? , 99 , 81 , 72 , 63 , 54 , 45

Select the correct answer


Solution!
Deduct the sum of the digits of the previous number each time..

Question No 74

Which number is the odd one out, 159, 248, 963, 357, 951, 852 ?

Select the correct answer


Solution!
In the rest there is the same difference between each digit! eg 8 (-3) 5 (-3) 2.

Question No 75

100 , 98 , 94 , 88 , 80 , 70 , ?

Select the correct answer


Solution!
Deduct 2, 4, 6, 8, 10, 12.

Question No 76

3 , 7 , 2 , 47 , ?

Select the correct answer


Solution!
3^2 - 7 = 2!7^2 - 2 = 47!In the same way!2^2 - 47 = -43.

Question No 77

2 , 5 , 10 , 17 , 26 , ?

Select the correct answer


Solution!
add 3 , 5 , 7 , 9 , 11,....

Question No 78

156 , 76 , 36 , 16 , ?

Select the correct answer


Solution!
Subtract 4 from previous term and then divide it with 2 to find next term..

Question No 79

1.5 , 3 , 5.5 , 9 , 13.5 , ?

Select the correct answer


Solution!
Add 1.5, 2.5, 3.5, 4.5, 5.5.

Question No 80

180 , 140 , 179 , 138 , 177 , 134 , ?

Select the correct answer


Solution!
Two parallel series, one with subtracting 1,2,3,... and other with subtracting 2,4,6,....

Question No 81

B , W , F , P , M , E , ?

Select the correct answer


Solution!
Two parallel series one with skipping 3 , 6,... alphabets and other with skipping 6 , 12,... alphabets..

Question No 82

2 , 6 , 18 , 54 , 162 , ?

Select the correct answer


Solution!
Multiply previous term with 2 to find next term..

Question No 83

5 , 26 , 131 , 656 , ?

Select the correct answer


Solution!
Multiply by 5 and add 1 each time..

Question No 84

Which number is the odd one out, 2, 5, 10, 17, 26, 37, 50, 64

Select the correct answer


Solution!
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1! !But, 64 is out of pattern..

Question No 85

5 , 5 , 3 , -1 , -7 , ?

Select the correct answer


Solution!
Subtract 0 ,2 , 4,....

Question No 86

100 , 50 , 200 , 25 , 400 , ?

Select the correct answer


Solution!
There are two interwoven sequences.! ! Multiply 2 starting at 100 and devide by 2 starting at 50..

Question No 87

F , I , M , P , T , W , ?

Select the correct answer


Solution!
Skip 2 and 3 alphabets alternatively..

Question No 88

Which two letters come next in the sequence A , D , I , P , Y , CF , DI , FD , ?

Select the correct answer


Solution!
take the numerical position of each letter in the alphabet to reveal the sequence of consecutive square numbers 1, 4, 9, 16, 25, 36, 49, 64, 81.

Question No 89

17 , 20 , 19 , 22 , 21 , 24 , 23 , ?

Select the correct answer


Solution!
Add 3 and subtract 1 alternatively..

Question No 90

9 , 16 , 13 , 13 , 17 , 10 , 21 , 7 , ?

Select the correct answer


Solution!
There are two interwoven sequences! !Add 4 starting with 9! !and subtract 3 starting with 16..

Question No 91

100 , 96.75 , 93.5 , 90.25 , 87 , ?

Select the correct answer


Solution!
Deduct 3.25 each time..

Question No 92

3.4 , 6.3 , 9.2 , 12.1 , 15 , ?

Select the correct answer


Solution!
Add 2.9 in previous term to find next term..

Question No 93

7/2 , 4 , 7 , 14 , ?

Select the correct answer


Solution!
Multiply previous 2 numbers and divide by 2..

Question No 94

8 , 16 , 32 , 64 , 128 , ?

Select the correct answer


Solution!
Multiply previous term with 2 to find next term..

Question No 95

M , F , N , G , R , I , S , L , W , P , ?

Select the correct answer


Solution!
Two parallel series one with skipping 0 and 3 alphabets alternatively and other with skipping 0 , 1 , 2,....

Question No 96

2 , 5.75 , ? , 13.25 , 17 , 20.75

Select the correct answer


Solution!
Add 3.75 each time..

Question No 97

XYZ , WVV , VSR , UPN , ?

Select the correct answer


Solution!
Subtract 1 from first 3 from second and 4 from third character..

Question No 98

B , C , E , G , K , ?

Select the correct answer


Solution!
Prime numbers 2, 3 , 5 , 7 , 11 , 13,....

Question No 99

F , O , T , W , ?

Select the correct answer


Solution!
Skip 8 , 4 , 2 , 1 alphabets..

Question No 100

3/81 , 4/256 , 5/625 , ?

Select the correct answer


Solution!
Add 1 in numerator and in denominator!(3*3)^2 = 81!(4*4)^2 = 256!(5*5)^2 = 625!in the same way!(6*6)^2 = 1296.

Question No 101

0 , 3 , 8 , 15 , ?

Select the correct answer


Solution!
Add 3 , 5 , 7,....

Question No 102

25 , 50 , 27 , 46 , 31 , 38 , 39 , ?

Select the correct answer


Solution!
There are two interwoven sequences.!Add 2, 4 and 8 from the sequence starting with 25!and subtract 4, 8 and 16 from the sequence starting with 50.

Question No 103

9 , 18 , 27 , ? , 45 , ? , 63

Select the correct answer


Solution!
Add 9 each time..

Question No 104

2 , 20 , 42 , 68 , 98 , ?

Select the correct answer


Solution!
Add 18 , 22 , 26 , 30 , 34,....

Question No 105

A , E , X , H , U , ?

Select the correct answer


Solution!
Two parallel series, one with skipping two alphabets in reverse order and other with skipping two alphabets in forward order.

Question No 106

O , P , R , U , ?

Select the correct answer


Solution!
Skip 0 , 1 , 2 , 3,... alphabets..

Question No 107

C , F , J , O , ?

Select the correct answer


Solution!
Skip 2 , 3 , 4,... alphabets..

Question No 108

1 , 2 , 4 , 8 , ?

Select the correct answer


Solution!
Add 1 first and then add double of previously added number..

Question No 109

6 , H , 9 , K , 11 , M , 14 , P , 16 , R , 19 , U , 21 , ?

Select the correct answer


Solution!
Add 3 and 2 alternatively in number series and skip 2 and 1 alphabets alternatively.

Question No 110

14 , 16 , 28 , 32 , 42 , 48 , 56 , 64 , ? , ?

Select the correct answer


Solution!
There are two interwoven sequences, add 14 starting at 14 and add 16 starting at 16..

Question No 111

B , D , F , H , J , L , ?

Select the correct answer


Solution!
Skip one alphabet..

Question No 112

759 , 675 , 335 , 165 , ?

Select the correct answer


Solution!
Each number is formed by multiplying the number formed by the first two digits of the previous number by its third digit.! !So, 16 * 5 = 80.

Question No 113

3 , 10 , 33 , 104 , ?

Select the correct answer


Solution!
Multiply with 3 and add 1, 3, 5, 7,....
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113