1. Which of the following represents the largest 4-digit number which can be added to 7249 in order to make the derived number divisible by each of 12, 14, 21, 33, and 54?
(a) 9123
(b) 9383
(c) 8727
(d) None of these
2. Find the maximum value of n such that 50! Is perfectly divisible by 2520n.
(a) 6
(b) 7
(c) 8
(d) None of these
3. Find the remainder when 25102 is divided by 17.
(a) 2
(b) 4
(c) 13
(d) 15
4. The ratio of the factorial of a number X to the square of the factorial of another number, which when increased by 50% gives the required number, is 1.25, find the number X?
(a) 6
(b) 5
(c) 9
(d) None of these
5. When we multiply a certain two-digit number by the sum of its digits, 405 is achieved. If you multiply the number written in reverse order of the same digits by the sum of the digits, we get 486. Find the number?
(a) 36
(b) 81
(c) 54
(d) 45
ANSWER’s
1 – (b)
2 – (c)
3 – (b)
4 – (a)
5 – (d)
