The LCM of 46, 68, 136, and 138 is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 9384.
46 = 2 × 23
68 = 22 × 17
136 = 23 × 17
138 = 2 × 3 × 23
LCM = take the highest power of all primes
Primes: 23, 31, 171, 231
LCM = 23 × 3 × 17 × 23
23 × 3 = 8 × 3 = 24
24 × 17 = 408
408 × 23 = 9384