Question
Find the $H.C.F$ of the numbers: $12, 45, 75.$
✓
Answer
Factors of $12$ are $1,2,3,4,6$ and $12.$
Factors of $45$ are $1,3,5,9,15$ and $45.$
Factors of $75$ are $1,3,5,15,25$ and $75.$
$\therefore $ Common factors of $12, 45$ and $75$ are $1$ and $3.$
Highest of these common factors is $3.$
$\therefore H.C.F$ of $12, 45$ and $75$ is $3.$
Factors of $45$ are $1,3,5,9,15$ and $45.$
Factors of $75$ are $1,3,5,15,25$ and $75.$
$\therefore $ Common factors of $12, 45$ and $75$ are $1$ and $3.$
Highest of these common factors is $3.$
$\therefore H.C.F$ of $12, 45$ and $75$ is $3.$
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