Numbers Questions And Answers.


1.Which one of the following is not a prime number?
A. 31
B. 61
C. 71
D. 91

2.(112 x 54) = ?
A. 77200
B. 76500
C. 70000
D. 67000

3.It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?
A. (216 + 1)
B. (216 - 1)
C. (7 x 223)
D. (296 + 1)

4.What least number must be added to 1056, so that the sum is completely divisible by 23?
A. 18
B. 20
C. 3
D. 2

5.1397 x 1397 = ?
A. 2031719
B. 18362619
C. 1981709
D. 1951609

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