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Number Theory II Flashcards | StudBud
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Number Theory II
Number Theory II
20 terms
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Factors, multiples, prime and composite
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What is the smallest number that is divisible by 5 and 6?
36
30
24
60
2
What is the seventh multiple of 7?
14
77
35
49
3
A number that has only two factors (1 and itself) is called a
prime number
composite number
phone number
odd number
4
A factor is also called a
multiple
number
divisor
calculator
5
Find the least common multiple of 4 and 18.
24
32
18
36
6
A number that can be divisible by 2 , 3 and 6.
21
15
17
18
7
List all the divisors of 100.
1, 2, 4, 5, 8, 10, 20, 25, 50, 100
1, 2, 4, 5, 10, 15, 20, 25, 50, 100
1, 2, 4, 5, 10, 20, 25, 50, 100
1, 2, 4, 5, 10, 20, 40, 25, 50, 100
8
Find the least common multiple of 12 and 8.
16
24
32
12
9
Which of the following is a not a prime number?
1
21
11
31
10
Find the greatest common factor of 18 and 12.
5
8
4
6
11
A number that is not divisible by 3.
666
555
333
999
12
All odd numbers are prime numbers.
False
Maybe
None of the above
True
13
What is 23 * 56?
1288
988
1378
1087
14
895 * 56
50 120
76 214
34 786
46 578
15
It is a number that leaves a remainder 1 when divided by 7 or 9.
64
24
56
37
16
Which of the following is not a divisor of 56?
14
7
8
3
17
Which of the following is not a multiple of 8?
20
56
72
32
18
Divide: 2868 : 3
856
846
756
956
19
Which one is a composite number?
4
5
2
3
20
Which of the following is not true about the number 2?
a composite number
a prime number
an even number
