Question

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 57 49 41 43 45 47 49哪些是合数

Answer 1

9,15,21,25,27,33，35,49,45

Answer 2

9 15 21 25 27 33 35 49 45 49