# GCD and LCM using Recursion Multiple choice Questions and Answers (MCQs)

## GCD and LCM using Recursion Multiple choice Questions and Answers (MCQs)

 Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an alias for LCM?
 A GCD B SCM C GCF D HCF
Question 1 Explanation:
GCD (Greatest Common Divisor), GCF (Greatest Common Factor), HCF (Highest Common Factor) is not an alias for LCM while SCM means Smallest Common Multiple.

 Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the LCM of 8 and 13?
 A 8 B 12 C 20 D 104
Question 2 Explanation:
104 is the smallest positive integer that is divisible by both 8 and 12.

 Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is the smallest number of 3 digits that is divisible by 2, 4, 8?
 A 100 B 102 C 116 D 104
Question 3 Explanation:
LCM of 2, 4, 8 is 8. So check for the number that is divisible by 8. So 104 is the smallest number that is divisible by 2, 4, 8.

 Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is also known as LCM?
 A Lowest Common Divisor B Least Common Multiple C Lowest Common Measure D Highest Common Multiple
Question 4 Explanation:
Least Common Multiple is also known as LCM or Lowest Common Multiple.

 Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the LCM of two coprime numbers?
 A 1 B 0 C Addition of two coprime numbers D Multiplication of two coprime numbers
Question 5 Explanation:
Coprime numbers have GCD 1. While LCM of coprime numbers is the product of those two coprime numbers.

There are 5 questions to complete.