Verbal Reasoning - Mental Ability Questions

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

24:60::210:?

Read the arrangement carefully and give the answer of following questions ?

K$23DBE8HM4@5JF4%K1+WR#AA*415

How many such symbols are there which is not immediately preceded by a letter but immediately followed by a number ?

DWT : GZW :: QPM : ___

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

QPQPQRPQP, QPQPRQPQP, QPQRPQPQP, QPRQPQPQP, QRPQPQPQP, _______________.

How many meaningful English words can be formed with the letters ESRO using each letter only once in each word?

Introducing a man, a woman said, 'He is the only son of my mother's mother." How is the woman related to the man ?  

If x means -, / stands for +, + stands for /, and - stands for x, which of the following gives 125 - 50 / 10 + 20 x 4 ?

In a family, there are six members A, B, C, D, E and F. 

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is F related to A ?