2. 12 = 2 * 2 * 3
1, 2, 3, 4, 6, 12
12
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.
None of them.
2. 12 = 2 * 2 * 3
6
3.
12 is a multiple of 2.
Only if the number is a multiple of 12.
2 is the only number is that both a factor of 2 and a multiple of 2.
1, 2, 3, 4, 8
6 is a factor of 30 and a multiple of 2.
2
1, 2, 3, 4, 6, 12
12
2 is a factor of 14 but not a multiple of 7.