Question

Find H.C.F. of $72$and $90$ by division method.

Answer 1

Step 1: Divide greater number by smaller number

$$\begin{gathered} 7290(1 \\ \underline{-72} \\ 1872(4 \\ \underline{-72} \\ 00 \end{gathered}$$

Step 2: Identifying the H.C.F.

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

Hence, H.C.F. of $72$and $90$ $=18$.

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