Question

L.C.M of 63,70 and 77

Answer 1

By prime factorization :-

63 = 3 × 21 = 3 × 3 × 7

70 = 2 × 35 = 2 × 5 × 7

77 = 7 × 11

LCM (63, 70, 77) = 3 × 3 × 2 × 5 × 7 × 11 = 6930

Answer 2

Answer:

The L.M of 63, 70 and 77 is 6930

Solution:

L.C.M is the least common multiple, i.e. the smallest number that can be the common multiple of the given numbers. It is divisible by the two or more given numbers.

To find the L.C.M initially we have to find the prime factors of the given numbers.

The given numbers are 63, 70 and 77.

Factors of 63: $7\times3\times3\times1$

Factors of 70: $5\times2\times7\times1$

Factors of 77: $7\times11\times1$

Therefore, the L.C.M of 63, 70 and 77 is $7\times3\times3\times5\times2\times11$ = 6930