Hi
Answer :- 273
EXPLANATION
We know that,
L.C.M x H.C.F of two numbers = product of two numbers.
Then,
H.C.F × L.C.M = 39 × 91
Or 13 × L.C.M = 3549
Or LCM = 3549 / 13
Or LCM = 273
Hence is LCM is 273
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