1 and 5
5
10 is a factor of 20 (10 * 2 = 20) and is a multiple of five (5 * 2 = 10).
Which number is a factor of 20 but not a multiple of 10?
1 and 5
2 is a factor of 14 but not a multiple of 7.
2 is a factor of 18 and is not a multiple of 3.
10 is a factor of 20 (10 * 2 = 20) and is a multiple of five (5 * 2 = 10).
Which number is a factor of 20 but not a multiple of 10?
1, 2, 4
1 and 5
2 is the only number is that both a factor of 2 and a multiple of 2.
6 is a factor of 30 and a multiple of 2.
2
Since 10 is a factor of 20, all multiples of 20 are multiples of 10. This is also true of 1, 2, 4 and 5.
20 is a possibility.
A factor of 2 is a whole number that divides (or goes into) 2, without remainder. 2 is a prime, so there is no factor of 2 other than 1 and 2 itself. A multiple of 2 is any number that 2 goes into, such as 2, 4, 6, 20002 etc. The number that is both a factor and multiple of 2 is 2.
2 is a factor of 14 but not a multiple of 7.
2 is a factor of 18 and is not a multiple of 3.