Finding the Greatest Common Factor, Least Common Multiple, and other Factors

This is an MCQ-based quiz for GRE on How to find the greatest common factor, least common multiple, and other factors.

Start Quiz

Which of the following pairs of numbers are twin primes?

1, 2 13, 19 3, 5 1, 3 2, 3

If x is a prime number, then 3x is

cannot be determined even a prime number odd divisible by 4

Which of the following is a prime number?

9 71 15 6 51

What is the greatest common factor of 18 and 24?

3 18 6 9 24

If a is the greatest common divisor of 64 and 14 and b is the least common multiple of 16 and 52 then a + b = ?

210 233 120 187

What is the least common multiple of 3, 4x, 5y, 6xy, and 10y?

30xy 60xy 30x^2y^2 25xy 60x^2y^2

What is the least common multiple of 45 and 60?

180 15 25 360 225

Find the greatest common factor of 16 and 24.

4 16 2 8

What is the greatest common factor of 6930 and 288 ?

288

110880

1995840

What is the least common multiple of 350 and 6270 ?

109,725

1,097,250

None of the other answers

219,450

2,194.500

Quiz/Test Summary

Title: Finding the Greatest Common Factor, Least Common Multiple, and other Factors

Questions: 10

Contributed by:

Diego Fri, May 20, 2022 09:11 PM UTC

Book a Trial Class