IQ Contest, Daily, Weekly & Monthly IQ & Mathematics Competitions

Solution!
5% of 300
=(300*5)/100=15
S.p =300-15=285
.

Question No 12

The average weight of 8 cats is 4 kg. If the weight of 2 dogs be included, the average rises by 600 g.The average weight of dogs is :

Select the correct answer

Solution!
Average weight of dogs:
=total weight with dogs-total weight of cats
=(10Ã—4.6-8Ã—4)kg
=(46-32)kg
=14 kg is weight of both dogs.
=14/2
=7 is the average weight of dogs.
.

Question No 13

What comes next in the series 122, 236, 3412, 4520....

Select the correct answer

Solution!
No explanation available for this question..

Question No 14

16, 8, 24,___, 36, 18, 54, 27, 81

Select the correct answer

Solution!
It is alternative series of divided by 2 and multiply by 3.
16/2=8, 8x3=24, 24/2=12, 12x3=36,
36/2=18, 18x3=54, 54/2=27, 27x3=81.
.

Question No 15

Which one of the following numbers is completely divisible by 99?

Select the correct answer

Solution!
99 = 11 x 9, where 11 and 9 are co-prime.
By hit and trial, we find that 114345 is divisible by 11 as well as 9. So, it is divisible by 99.
.

Question No 16

Choose or find odd word
Foggy , Transparent , Turbid , Cloudy

Select the correct answer

Solution!
All other are synonyms.

Question No 17

A glass is made in 3 hours by 4 men. The same glass can be made in 6 hours by how many men?

Select the correct answer

Solution!
No explanation available for this question..

Question No 18

In following questions, one term in number series is incorrect.
Find out the incorrect number 10, 14, 28, 32, 64, 68, 132

Select the correct answer

Solution!
Alternately, the numbers are increased by four and doubled to get the next number>
Thus, 10 + 4 = 14;
14 * 2 = 28;
28 + 4 = 32;
32 * 2 =64 and so on.
So, 132 is wrong and must be replaced by (68 * 2) i.e. 136..

Question No 19

In following questions, one term in number series is incorrect. Find out the incorrect number
105, 85, 60, 30, 0, -45, -90

Select the correct answer

Solution!
The sequence is - 20, - 25, - 30,...
So, 0 is wrong and must be replaced by (30 - 35) i.e. -5.

Question No 20

John is 5 years older than wella. Six from now the sum of their ages will be 37 years. How old is John now?

Solution!
1st condition:
J=W+5
2nd condition:
J+6+W+6=37
2W=20
W=10
J=10+5=15
.

Question No 21

John's father is 27 years older than him and his brother Bob is 3 years younger than him. The age difference between Bob and his father is:

Select the correct answer

Solution!
No explanation available for this question..

Question No 22

4, 7, 11, 18, x, y, 76, 123... Sum of x and y:

Select the correct answer

Solution!
No explanation available for this question..

Question No 23

1.1, 4.8, 9.27,___, 25.125?
Find the missing.

Select the correct answer

Solution!
Two different series of 1, 2, 3, 4, 5.
before decimal after decimal.
Before decimal: square of numbers.
after decimal : cubes of numbers.
.

Question No 24

A typist can type 60 words per hour. A document contains 600 words. How many document will he type in 20 hours?

Select the correct answer

Solution!
No explanation available for this question..

Question No 25

If the number 91876 * 2 is completely divisible by 8, then the smallest whole number in place of * will be:

Select the correct answer

Solution!
Then number 6x2 must be divisible by 8.
x = 3, as 632 is divisible 8.
.

Question No 26

Find the word which is different from the rest

Select the correct answer

Solution!
No explanation available for this question..

Question No 27

IF a catamaran travel at a speed of 20 km per hour in stillwater. So when it travel at a downstream speed 5 kilometre per hour. What will be the time taken by it to travel 90 km.

Select the correct answer

Solution!
Since the catamaran is travelling in downstream the speed of the stream as a pin the speed of the ship so its speed is equals to catamaran speed+downstream speed. Which becomes 20+5=25 km/he. Now by applying a formula we get
Time=90/25. We get our answer which is 3.6
.

Question No 28

Which word means the same as erroneous?

Select the correct answer

Solution!
Erroneous means inaccurate, faulty, or incorrect..

Question No 29

397 x 397 + 104 x 104 + 2 x 397 x 104 = ?

Select the correct answer

Solution!
(397)2 + (104)2 + 2 x 397 x 104
= (397 + 104)2
= (501)2 = (500 + 1)2
= (5002) + (1)2 + (2 x 500 x 1)
= 250000 + 1 + 1000
= 251001
.

Question No 30

Addison and Bailey are brothers, Adney's Daughter has a boy whose Father is Bailey, then Addison is ___ of Adney's grandson:

Select the correct answer

Solution!
No explanation available for this question..
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