Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

UMP, SKN, QIL, OGJ, ?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
-4, ? , 1, 3.5, 6, 8.5

If the code for MOTHER is JRQKBU then what is the code for PRINCIPAL?

If - stands for division, + for multiplication, ÷ for subtraction, x for addition, then which of the following equations is correct?

Find the odd word/letters/number pair from the given alternatives.

Select the related word/letters/numbers from the given alternatives. CURE : DISEASE :: HEAL : ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
I, V, ? , L

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

?, ONM, GFE, XWV