Question

find the snallest number which is multiple of 21 and 56​

Answer 1

Answer:

168

Step-by-step explanation:

21=3*7

56=2*2*2*7

LCM=2*2*2*3*7

       =168

Hence the LCM of 21 and 56 is 168.

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Answer 2

$\boxed{\bold{The\: smallest\: number\: which\: is\: the\: multiple\: of\: 21\: and\: 56\: is\: 168}}$

since the LCM of 21 and 56 is 168,

$\bold{\bold{\frac{168}{21} = 8}\:\:\:\:and \:\:\:\:\bold{\frac{168}{56}=3}}}$

168 = 2×2×2×3×7

[21 = 3×7]       [56 = 2×2×2×7]