In the following question, select the related word/ number/ letter from the given alternatives.
Lionel Messi : Football Player : : Serena Williams : ? 

A borrowed Rs.1500 at 4% per annum and Rs.1400 at 5% per annum for the same period. He paid Rs.390 as total interest. Find the time for which he borrowed the sum.

Find the missing number form the given table.

Find the number of triangles in the given figure.

Which venn diagram shows the relation between male, female and teacher?

A train passes two bridges of length 400 m and 200 m. in 50 seconds and 30 seconds respectively. The length of the train is-

Necessary to get nuclear energy?

Direction: In the following question, select the related letters from the given alternatives. 

QPON : MLKJ :: XWVU : ?