In each of the following questions select the related letters/word/number/figure from the alternatives.
DE : 10 :: HI : ?

Options

A. 17
B. 20
C. 36
D. 46

Answer

C

Explanation

`underset(4)(D) + underset(5)(E) implies 4 xx 5 = 20 , (20)/(2) = 10 `
`underset(8)(H) underset(9)(I) implies 8 xx 9 = 72, (72)/(2) = 36`