The LCM of 16, 21, 364 and 156 is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 4368.
The prime factorizations:
16 = 2⁴
21 = 3 × 7
364 = 2² × 7 × 13
156 = 2² × 3 × 13
Take highest powers of all primes:
2⁴, 3¹, 7¹, 13¹
LCM = 2⁴ × 3 × 7 × 13 = 16 × 3 × 7 × 13 = 4368