Choose the correct alternative from the following : - Assertion (A) : The Indian Constitution came into force with effect from 26th January, 1950.
Reason (R) : 26th January is celebrated as the Republic Day.

B. BOTH A AND R ARE TRUE BUT R IS NOT THE CORRECT EXPLANATION OF A.

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - Z, S, W, O, T, K, Q, G, ?

A. N, C

In following number series, two terms have been put within brackets. Choose the appropriate option - 2,6,12,20,30,42,56,x

D. 72

Select the most appropriate alternative as the answer. - While travelling in a train, you notice a man from the coach behind yours fall off the train . You would :

A. PULL THE ALARM CHAIN SO THAT THE TRAIN MAY STOP AND THE MAN MAY BE HELPED.

Complete analogous pair - Ottawa : Canada : : Canberra : ?

D. AUSTRALIA