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Find the greatest common factor of 210 and 90.

Find the greatest common factor of $210$ and $90$ .

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Greatest common factor

Full solution

Q. Find the greatest common factor of

210

and

90

.

List factors of $210$ : List the factors of $210$ . $\newline$ Factors of $210$ : $1$ , $2$ , $3$ , $5$ , $6$ , $7$ , $10$ , $14$ , $210$ $0$ , $210$ $1$ , $210$ $2$ , $210$ $3$ , $210$ $4$ , $210$ $5$ , $210$ $6$ , $210$
List factors of $90$ : List the factors of $90$ . $\newline$ Factors of $90$ : $1$ , $2$ , $3$ , $5$ , $6$ , $9$ , $10$ , $15$ , $18$ , $30$ , $2$ $0$ , $2$ $1$
Identify common factors of $210$ and $90$ : Identify the common factors of $210$ and $90$ . $\newline$ Common factors of $210$ and $90$ : $1$ , $2$ , $3$ , $5$ , $90$ $0$ , $90$ $1$ , $90$ $2$ , $90$ $3$
Find GCF of $210$ and $90$ : Find the Greatest Common Factor (GCF) of $210$ and $90$ . $\newline$ The greatest common factor is the largest number in the list of common factors. $\newline$ GCF of $210$ and $90$ : $30$

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