Question

Find H.C.F. of $120,144$ and $168$ by division method.

Answer 1

Step 1: Find H.C.F. of first two numbers $120,144$ by division method

$$\begin{gathered} 120144(1 \\ \underline{-120} \\ 24120(5 \\ \underline{-120} \\ 00 \end{gathered}$$

H.C.F of $120,144=24$

Step 2: Find H.C.F. of $24$ and $168$

$$\begin{gathered} 24168(7 \\ \underline{-168} \\ 00 \end{gathered}$$

The last divisor is the required H.C.F.

Hence, H.C.F. of$120,144$ and $168$ $=24$.

Therefore, H.C.F. have been determined using long division method.