QUESTION 1
If all the factors of 240 are written in increasing order, the factor which occupies the 16th position is?
QUESTION 2
abc is the smallest three digit positive integer with six odd factors and twelve even factors (where a, b, and c are digits). What is the value of b?
QUESTION 3
How many factors of 840 are multiples of 5 but not of 8?
QUESTION 4
How many positive perfect square less than \({10^6}\) are multiples of 24?
QUESTION 5
A certain integer N has exactly eight factors, counting itself and 1. The numbers 35 and 77 are two of the factors. What is the sum of the digits of N?
If all the factors of 240 are written in increasing order, the factor which occupies the 16th position is?
- 120
- 48
- 60
- 80
QUESTION 2
abc is the smallest three digit positive integer with six odd factors and twelve even factors (where a, b, and c are digits). What is the value of b?
QUESTION 3
How many factors of 840 are multiples of 5 but not of 8?
QUESTION 4
How many positive perfect square less than \({10^6}\) are multiples of 24?
QUESTION 5
A certain integer N has exactly eight factors, counting itself and 1. The numbers 35 and 77 are two of the factors. What is the sum of the digits of N?
- 9
- 10
- 16
- 18