Question

Is this correct ? Please help

Answer 1

42

Explanation:

210/42 = 5

126/42 = 3

42/42 = 1

all of them are divisible by 42

and that is the highest number you can divide all the numbers by the same number so yes this is the greatest common factor you're correct

Answer 2

J. 42

Explanation:

To find the greatest common factor (GCF) of a set of numbers, first list the prime factors of each number:

42 = 2 × 3 × 7

126 = 2 × 3 × 3 × 7

210 = 2 × 3 × 5 × 7

The three numbers have the prime factors of one 2, one 3 and one 7 in common.

Multiply them together to get the GCF:

2 × 3 × 7 = 42

Therefore, the GCF of 42, 126 and 210 is 42.