
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:- If m, n, o, p and q are integers, then m(n + o) (p β q) must be even when which of the following is even?
A. m
B. n
C. m + n
D. n + p
Ques:- A train takes 9 sec to cross a pole. If the speed of the train is 48 kmph, then length of the train is
A. 80 m
B. 90 m
C. 120 m
D. 150 m
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