Verbal Reasoning - Mental Ability Questions

In the following question, select the related letter/letters from the given alternatives.

NOS : PQU : : KLP : ?

In the following question, select the related letter/letters from the given alternatives.

KPV : LQW : : BOY : ?

In the following question, select the related letter/letters from the given alternatives.

DFI : IKN : : NPS : ?

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

3 + 4 - 25 ÷ 2 x 12 = 41

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

15 : 22 : : 19 : ?

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

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

If "A" means "minus", "B" means "divided by", "C" means "plus" and "D" means "multiplied by", then

54 B 6 A 4 C 2 D 5 = ?

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

14 + 8 ÷ 16 - 9 x 12 = 10