Without actual division determine which of the following is divisible by 9.
10008
68709
17360
32900
GCF of 16 and 40 is
6
7
8
10
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
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
Without actual division determine which of the following is divisible by 5.
12345
32873
71324
17362
Without actual division determine which of the following is divisible by 4
5695
3978
The prime factorisation of 1080 is
2 × 2 × 2 × 3× 3× 3×5
2× 2× 2× 2× 2× 3× 3× 5
2× 2× 3× 3× 3× 3× 5
2× 2× 2× 3× 3× 5× 5
The factors of 31 are
1, 3, 31
1, 6, 3, 31
1, 31
1, 7, 31
Which of the following is not a prime number.
2
67
89
35
Without actual division determine which of the following is divisible by 6.
63855
961572
