Question

LCM of 64, 36 and 80 is

• A. 1880
• B. 2880
• C. 2550
• D. 3600

Answer 1

Answer: (B)

2880

Prime factors of given numbers are

$64=2\times 2\times 2\times 2\times 2\times 2$

$36=2\times 2\times 3\times 3$

$80=2\times 2\times 2\times 2\times 5$

$So,LCM=2\times 2\times 2\times 2\times 2\times 2\times 3\times 3\times 5=2880$

So, correct answer is option B.