## Factors And Multiples

Question

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: 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

The LCM of 3 and 5 is:

**Options:**

A. | 30 |

B. | 15 |

C. | 35 |

D. | 40 |

**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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