Q3.

Eight girls - L, M, N, O, P, Q, R and S - were seated in two rows, one facing the north, the other facing the south. Each row had only four chairs. There is equal distance between adjacent persons. Each person in a row faces another person from the other row. Q and P were diagonally opposite to each other. M was opposite to P. R was to the immediate right of L. S was second to the right of M. N was at one of the extreme ends of the row. Who among the following girls was sitting opposite to O?

Q4.

Which of the following numbers will replace the question mark (?) in the given series?

52, 69, 86, 103, ?, 137

Q5.

Two statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:

All keys are locks.

All locks are handles.

Conclusions:

I. Some locks are keys.

II. Some handles are keys.