Verbal Reasoning - Mental Ability Questions

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

CEG : IKM : : FHJ : ?

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

9, 10, 13, 22, 49, ?

Select the related word/letters/numbers from the given alternatives:

OOQR : QQST :: UUWX : ?

Select the related word/letters/number from the given alternatives.

9 : 27 : : 64 : ?

Select the related letters from the given alternatives.

ACE : YAC :: BDF : ?

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

6 x 18 + 40 ÷ 30 - 10 = 20

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

42, 21, 21, ?, 63, 157.5

Select the related word/letters/number from the given alternatives.

FG : UT : : HI : ?