In following questions, one term in number series is incorrect.

Find out the incorrect number

11, 5, 20, 12, 40, 26, 74, 54

Find out the incorrect number

11, 5, 20, 12, 40, 26, 74, 54

The given sequence is a combination of two series:

I. 11, 20, 40, 74 and

II. 5, 12, 26, 54

The pattern in I becomes + 9, + 18, + 36, ... if 40 is replaced by 38.

So, 40 is wrong..

Bicycle travel first How distance between two place with the speed of 5 kilometre per hour and rest of her sister is the speed of 20 km per hour. The average speed of bicycle is:

Let the total distance covered be" s "km

Total time taken,

=(s/2)/5+(s/2)/20

=5s/40

Average speed,

=s/(5s/40)

=s*(40/5s)

=8 km/hr

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In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

_ bcdbc _ dcabd _ bcdbc _ dc _ bd

The series is abcd / bcad / cabd / abcd / bcad / cabd. Thus, the pattern abcd / bcad / cabd is repeated twice.

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The average of four consecutive odd numbers is 43. What is the difference between the highest and lowest numbers.

Let's 4 consecutive odd numbers are:

3, 5, 7, 9

Lowest term is 3 and highest is 9

9-3 =6

So, difference of 6 will remain the same in the consecutive series numbers.

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In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. shg, rif, qje, pkd, ?

The first and third letters of each term are moved one step backward and the second letter is moved one step forward to obtain the corresponding letters of the next term.

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A + B means A is the father of B ;

A - B means A is the wife of B ;

A x B means A is the brother of B ;

A Ã· B means A is the daughter of B.

If P x R + Q, which of the following is true?

Option (A)

P x R + Q means P is the brother of R who is the father of Q i.e. P is the uncle of Q

A is the father of C.But C is not his son.

E is the daughter of C.F is the spouse of A.

B is the brother C.D is the of B.

G is the spouse of B.H is the father of G.

Who is the son of F?

B is the son of A and F is the spouse of A. So, B is the son of F..

The speed of swimmer along the flow of river is 40 kilometre per hour and against the flow of river is 22 kilometre per hour what would be the speed of swimmer in still water?

Speed of swimmer (x)=(1)x[downstream speed+upstream speed]/2

X=(40+22)/2=31

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In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. AYD, BVF, DRH, ?, KGL

The first letters of the first, second, third and fourth are moved one, two, three and four steps forward respectively to obtain the first letter of the successive terms. The second letters of the first, second, third and fourth terms are moved three, four, five and six steps backward respectively to obtain the second letters of the successive terms.The last letters of the terms are alternate.

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

ab _ bc _ c _ ba _ c

The series is abc / bca / cab / abc. Thus, the letters are written in a cyclic order.

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10 evacuator works 10 hour daily to remove 2500 cubic feet of Earth in 3 days. How many evacuator work 6 hour daily to remove 5000 cubic feet of Earth in 2 days?

Let x evacuator are required.

Evacuators are inversely proportional to hours and days are directly proportional to work progress

So,

X/10=(10/6)*(5000/2500)*(3/2)

=48

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