Verbal Reasoning - Mental Ability Questions

In the following question, select the missing number from the given series.

57, 54, 48, 39, ?, 12

Select the missing term based on the given related pair.

Select the missing term based on the given related pair of letter clusters.

BFK : IMR :: DGP : __

In the following question, select the related word from the given alternatives.

Umbrella : Rain : : Sweater : ?

Which of the following terms follows the trend of the given list?

YYYYYYX, YYYYYXX, YYYYXXX, YYYXXXX, YYXXXXX, _______________.

If "A" means "subtraction", "B" means "division", "C" means "addition" and "D" means "multiplication", then

305 B 5 A 28 C 43 D 12 = ?

If "A" means "subtraction", "B" means "division", "C" means "addition" and "D" means "multiplication", then

411 B 3 A 29 C 53 D 20 = ?

In the following question, select the related number pair from the given alternatives.

69 : 87 : : ? : ?