Factors And Multiples

Question
The LCM of 3 and 5 is:
Options:
A. 30
B. 15
C. 35
D. 40

 Next Question
Answer: Option B
: B

Factors of 3: 1, 3
Factors of 5: 1, 5

3 and 5 are co-prime numbers because 1 is their only common factor.
LCM of co-prime numbers is equal to the product of the numbers.

So,
LCM of 3 , 5=3×5=15

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