380, 645, 557, 656, 762, 875, ?

In a certain code SISTER is written as RHRSDQ. How is UNCLE written in that code? 

In a row of boys, if A is 10th from left and B is 9th from the right and interchange their positions, A becomes 15th from the left. How many boys are there in the row?

Find the area which shows students studying biology and computer but not mathematics.

Pointing to a man in a photograph woman says “ He is the father of my only daughter in - law ' s father - in - law. " How is man related to women? 

1, 2, 3, 4, 5 and 6 have written on surface of dice. Four forms of dice shown below. In this dice which digit will be on the surface opposite to the digit 3?

In a class of 40 students, Deepti is 26th from left and Rani is 26th from right. How many students are there between them in row?