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:- If the largest three digit number is subtracted from the smallest five digit number, then the remainder is
A. 9000
B. 9001
C. 90001
D. 90007