Verbal Reasoning - Mental Ability Questions

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

42:20::64:?

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 ? 

Look at the series :

3, 7, 24, 11, __, 19, 19,... What number should fill the blank ?

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

8 + 2 - 40 ÷ 5 x 16 = 44

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

FOM : CLJ : : ?  :  ?

What will come in place of the question mark (?) in the following number series?

256, ?, 190, 167, 148, 131

Consider the following information and answer questions based on it.

Six students Lily, Mary, July, Daisy, Rosy and Fairy are sitting in a circle facing each other such that -

1. Mary sits to the immediate right of July.

2. Lily does not sit near Fairy.

3. The student sitting on the immediate left of July, sits to the immediate right of Fairy.

4. Rosy does not sit to the immediate right of Mary.

___ sits to the immediate left of Lily.