What is value placed at Question mark?
10.1: 1.01 ::  0.1: ?

A is the brother of B, C is the father of D, E is the mother of B. A and D are brother. How is E related to C?

If MEKLF is coded as 91782 and LLLJK as 88867, then how can IGHED be coded?

In the following questions complete the number series :
204, 100, 48, 22, ___

In the following question find the missing number?

If A is the mother of B. C is the son A, D is the brother of E, E is the daughter of B. Who is the grandmother other of D?

Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
7– 4 – 1 = 714, 9 – 2 – 3 = 932 8– 0–4 = ?  

Find the number of squares?