Which one of the following is an application of Stack

Select the word-pair in which the two words are related in the same way as the two words in the following word-pair.

Painter : Painting

By interchanging the given two signs which of the following equation will be not correct?

× and –

Statements:

X < W ≤ F = Q ≥ P = T ≥O ≥ S = R

Conclusions:

I) Q > R

I) Q = R

Select the option in which the numbers are not related in the same way as are the number of the following set.

(520, 8, 56)

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the related letters/words/numbers from the given alternatives.

E @ G = 37 : L @ D = 50 :: H @ K = 90 : : P @ F = ?

Find the odd set of numbers from the given alternatives?