You know the numbers listed above are not factors of 12 because they cannot be multiplied by anything to equal twelve (ex. 5 cant be multiplied by anything to equal 12, the closest would be 5 x 3 which is 15, not twelve) so, 5, 7, 8, 9, 10, and 11 are not factors of 12 because they cannot be multiplied by another number to result in 12.
No, because you have 1 more marble than her. While you have 6 marbles in the bag, she has 4; there’s a 3/5 chance that you’ll win, and a 2/5 chance that she’ll win.
