Verbal Reasoning - Mental Ability Questions

The weights of 4 boxes are 100, 70, 50 and 90 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

If P denotes '÷', Q denotes 'x', R denotes '+' and S denotes '­', then 18Q12P4R5S6 = ?

P, Q, R and S are playing a game of carrom. P, R and S, Q are partners. 'S' is to the right of 'R'. If 'R' is facing West, then 'Q' is facing which direction?

Arrange the given words in the sequence in which they occur in the dictionary.
i. Accuse
ii. Accord
iii. Acquisite
iv. Acquire

A boy and a girl are facing each other. If the boy is standing at the north-west direction of the girl, in which direction is the girl to the boy?

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

64, 100, 169, 289, ?

The number of symbols that are preceeded by a letter and not followed by a number in the following expression is ___.

A$1%MB#6&NC=3!OD+KP

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
49, 64, ?, 100, 121