Ques:- All natural numbers and 0 are called the _____ numbers.
A. whole
B. rational
C. integer
D. prime
Ques:- If a 200 m long train crosses a platform of the same length as that of the train in 20 seconds, then the speed of the train is
A. 50 km/hr
B. 60 km/hr
C. 70 km/hr
D. 72 km/hr