
Ques:- What percentage of numbers from 1 to 70 have squares that end in the digit 1?
A. 1
B. 14
C. 20
D. 21
Ques:- The time taken by a train 180 m long, travelling at 42 kmph, in pasing a person walking in the same direction at 6 kmph, will be
A. 16 sec
B. 18 sec
C. 21 sec
D. 24 sec
Ques:- A clock takes 9 seconds to strike 4 times. In order to strike 12 times at the same rate, the time taken is
A. 27 seconds
B. 29 seconds
C. 33 seconds
D. 36 seconds