Pointing to a boy, a man said to a woman, “His mother is the only daughter of your father.” How was the boy related to the woman?

Pointing to a photograph the man said, “The lady in the photograph is my nephew’s maternal grandmother.”
How is the lady in the photograph related to the man’s sister who has no other sister?

How many times do the hands of a clock coincide in 24 hours?

How many times are the hands of a clock at right angles in 24 hours?

Find the odd man out.
253, 136, 352, 324, 631, 244

What is the place value of 6 in 64?

Q is the brother of R;
P is the sister of Q;
T is the brother of S;
S is the daughter of R.
Who are the cousins of Q ? 

(i) In a family of six persons A, B, C, D, E and F, there are two married couples. 
(ii) D is grandmother of A and mother of B. 
(iii) C is wife of B and mother of F. 
(iv) F is the grand daughter of E.  
Who among the following is one of the couples ? 

Find the missing number in the given number series?
625, 625, 600, ?, 475, 875

If air is called green , green is called blue, blue is called sky, sky is called yellow, yellow is called water and water is called pink, then what is the color of clear sky ?