How many such pairs of letters are there in the word CONTRAST each of which has as many letters between them in the word
as in the English alphabet?

In a certain code 'GONE' is written as 'NOEGG' and 'LOAD' is written as 'AODLL'. How is 'SORT written in that code ?

M is brother of K. T is sister of K. R is father of M. J is wife of R.How many sons does J have ?

The positions of the first and the fifth digits in the number 83416759 are interchanged.Similarly the positions of the second
and the sixth digits are interchanged and so on. Which of the following will be the fourth digit from the right end after the
rearrangements?

What should come next in the following number series ?

9  7  5 3  1 1 8  6  4  2  2  9  7  5  3  1 8
6  4  2  2  9  7  5 3  1  8  6  4  2  9  7  5

In a certain code BLACK is written as 'ALBKC' and SMART is written as 'AMSTR'. How is CLOCK written in that code ?