Question

what is the LCM of 21 and 65​

Answer 1

Step-by-step explanation:

Find the prime factorization of 21

21 = 3 × 7

Find the prime factorization of 65

65 = 5 × 13

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 3 × 5 × 7 × 13

LCM = 1365

Answer 2

Answer:

21 × 65 = 1365

Step-by-step explanation:

the answer is 1365

7 |21, 65

3 |3 , 65

5 |1 , 65

13 |1 , 13

1 , 1

LCM=3×5×7×13

21×65

=1365