Aptitude Test: Number System
No. of Questions: 10
Time Duration: 10 min
1.
If positive integer z is a multiple of 15 and 25, which of the following must be true?
I. z is divisible by 5
II. z is divisible by 45
III. z is divisible by 75
2.
Find the Greatest Common Factor (GCF) of 210 and 294.
3.
The expression $508^2 - 501^2$ is divisible by which of the following?
4.
What is the smallest positive integer that must be subtracted from 2025 so that the difference is completely divisible by 21?
5.
Simplify the expression: $5^3 - 4^2 + \sqrt{121} - 2^0$
6.
If $a=−∣b∣$ and $b>0$, which of the following must be true?
7.
A number when divided by 7 leaves a remainder of 3, and the resulting quotient when divided by 5 leaves a remainder of 2. What will be the remainder when the original number is divided by 35?
8.
If $m = \frac{10!}{7!3!}$, which of the following is NOT a factor of m?
9.
The sum of four consecutive positive integers is 190. What is the smallest of these integers?
10.
Which of the following is a prime number?
