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LCM

If a and b ar...

Question

If a and b are co-primes, then their LCM is
(a) 1
(b) $\frac{a}{b}$
(c) ab
(d) none of these

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Solution

(c) ab

If a and b are co-primes then their LCM will be ab.
For example, 4 and 9 are co-primes.
L.C.M. of 4 and 9 is 4×9.

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