The prime numbers between 20 and 40 are
23, 29, 31, 37
23, 27, 29, 31, 37
23, 27, 29, 31, 33
23, 29, 31, 35, 37
Without actual division determine which of the following is divisible by 9.
10008
68709
17360
32900
The common factors of 8 and 12 are
2, 4, 8
2, 3, 6
2, 4, 6
2, 4
Without actual division determine which of the following is divisible by 6.
32873
63855
961572
The multiples of 3 less than 20 are.
1, 3, 6, 9, 12, 15, 18
3, 6, 9, 12, 15, 18
1, 3, 9 12, 15, 18
3, 9, 12, 15, 18, 21
The prime numbers less than 15 are.
1, 2, 3, 7, 11, 13
1, 2, 3, 5, 7, 11, 13
2, 3, 7, 11, 13
2, 3, 5, 7, 11, 13
GCF of 16 and 40 is
6
7
8
10
The factors of 31 are
1, 3, 31
1, 6, 3, 31
1, 31
1, 7, 31
GCF of 27 and 45 is
9
5
The common factors of 12 and 30 are
2, 3, 4
2, 3, 5
