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Ques:- A prime number N, in the range 10 to 50 remains unchanged when its digits are reversed. The square of such a number is
A. 1936
B. 1089
C. 484
D. 121
Ques:- If n and p are both odd numbers, which of the following is an even number?
A. n + p
B. n + P + 1
C. np + 2
D. np
Ques:- The H.C.F of two numbers is 12 and their difference is 12. The numbers are
A. 94, 106
B. 84, 96
C. 70. 82
D. 66, 78