Let S denote the set of all (positive) divisors of 605. The product of all the numbers in S equals 60e for some integer e. What is the value of e?

198

99

1980

990

none of these

Correct Answer : C

A number exceeds its four seventh by 18. What is the number

If m and n (n > 1) are whole numbers, such that mn = 121, the value of (m – 1)n + 1 is

How many positive numbers less than 100000 are such that only the digits 5, 6, 7, 8, 9 are used in the number and the number is divisible by 4?