This Level 1 exercise on Factors and Multiples tests understanding of basic number theory concepts. It assesses the ability to identify factors and multiples of given numbers, recognize composite numbers, and determine numbers not divisible by a given factor.
7
3
9
None of the above.
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2
1
3
4
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7 and 8
1 and 15
3, 5 and 15
1, 3, 5 and 15
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8
12
15
21
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4
2
8
12
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1
2
3
4
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12
2
8
10
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21
43
32
85
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17
23
20
33
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12
2
8
10
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2n + 2
2n + 3
2n + 1
4n + 5
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85
75
57
17
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3
7
21
17
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29
33
27
26
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2n + 1 + 3
2n + 4
2n + 2n
2n + 5
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73
21
88
75
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2
4
3
9
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234, 456
450, 002
111,111,112
718,236
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4 ∙ 4 ∙ 4 ∙ 3
2 ∙ 2 ∙ 2 ∙ 5
2 ∙ 2 ∙ 2 ∙ 2 ∙ 2 ∙ 3
4 ∙ 24
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