Question

find the smallest square number that is divisible by each of the number 12 15 and 21​

Answer 1

Step-by-step explanation:

So, LCM = 2 × 2 × 3 × 5 × 7 = 420.

Answer 2

420

Step-by-step explanation:

Solution:-

If we want to find the smallest number to be divided by such numbers we have to find LCM.

$\begin{gathered} \begin{array} {c| l}2&12,15,21 \\ \hline 2& 6,15,21 \\ \hline 3&3,15,21 \\ \hline5&1,5,7 \\ \hline7&1,1,7 \\ \hline &1,1,1 \end{array}\end{gathered}$

So, LCM = 2 × 2 × 3 × 5 × 7 = 420.