In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

AZ, BY, CX, ?

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

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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A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. When it is successively divided by 5 and 4, then the respective remainders will be:

4 | x y = (5 x 1 + 4) = 9

5 | y -1 x = (4 x y + 1) = (4 x 9 + 1) = 37

| 1 -4

Now, 37 when divided successively by 5 and 4, we get

5 | 37

4 | 7 - 2

Respective remainders are 2 and 3

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Lakshmi and Meena's are Rohan's wives. Shalini is Meena's step-daughter. How is Lakshmi related to Shalini?

A.

B.

C.

D.

Solution:

Option (C)

Shalini is Meena's step-daughter means Shalini is the daughter of the other wife of Rohan.

So, Shalini is the daughter of Lakshmi or Lakshmi is the mother of Shalini.

K is the brother of N and X. Y is the mother of N and Z is the father of K.

Which of the following statement is not definitely true?

option D.

K is the brother of N and X. So, Y who is the mother of N and Z who is the father of K, will be mother and father of all three .However, it is not mentioned weather N is male or female.

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