Question

Find the LCM of 21, 27, 63 and 189.
Show the full working step by step.

Answer 1

Answer:

189

Step-by-step explanation:

Answer 2

To find : LCM of $21,27,63,189$

Solution :

• To find the LCM of

• $21,27,63,189$ we find factors of $21,27,63,189$

• Prime Factors of $21 = 3\times 7$

        Prime Factors of $27 = 3\times 3\times 3$

        Prime Factors of $63 = 3\times 3\times 7$

        Prime Factors of $189 = 3\times 3\times 3\times7$

• LCM = $3\times 3\times 3\times 7$

Hence . LCM of $21,27,63,189$ is $189$.