Question
Find the $HCF$ of $:2$ and an even number.
✓
Answer
$2$ and $4$ are two prime numbers.
Now, $HCF$ of $2$ and $4$ is as follows:
$2 = 2 \times 1$
$4 = 2 \times 2 \times 1$
$\therefore HCF =2 \times 1 = 2$
Now, $HCF$ of $2$ and $4$ is as follows:
$2 = 2 \times 1$
$4 = 2 \times 2 \times 1$
$\therefore HCF =2 \times 1 = 2$
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