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Number System
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Guest practice
Number System
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1
What is the value of 8 + 2 × 3?
A
30
B
14
C
24
D
10
2
Which of the following is a factor pair of 24?
A
3 and 8
B
4 and 7
C
5 and 6
D
2 and 11
3
Which numbers are multiples of 8?
A
16
B
24
C
30
D
40
4
Which are factors of 48?
A
4
B
6
C
8
D
12
5
Which numbers are multiples of both 3 and 4?
A
12
B
24
C
36
D
48
6
Which number is divisible by 5?
A
102
B
205
C
308
D
411
7
Which number is divisible by 3?
A
41
B
52
C
63
D
74
8
Simplify: 8 + 2 × 3
A
14
B
30
C
10
D
24
9
Simplify: (10 - 2) × 3
A
24
B
18
C
30
D
12
10
What are the factors of 28?
A
1,2,4,7,14,28
B
1,2,4,14,28
C
2,4,7,14
D
1,7,14,28
11
What is the smallest whole number?
A
0
B
1
C
-1
D
None of these
12
Which of the following is a prime number?
A
4
B
9
C
11
D
15
13
What is the LCM of 3 and 7?
A
10
B
14
C
21
D
28
14
Which of the following is an even prime number?
A
1
B
2
C
3
D
5
15
Which of the following is a prime number?
A
9
B
15
C
19
D
21
16
How many factors does 16 have?
A
3
B
4
C
5
D
6
17
What is the HCF of 14 and 21?
A
1
B
3
C
7
D
14
18
Which of the following are even numbers?
A
2
B
7
C
10
D
14
19
What is the LCM of 5 and 7?
A
30
B
35
C
40
D
45
20
Which of the following is a factor of 36?
A
5
B
7
C
9
D
11
21
Which of the following are odd numbers?
A
3
B
7
C
11
D
14
22
Which number is divisible by 6?
A
104
B
112
C
126
D
134
23
Which integer is greater than -3?
A
-4
B
-5
C
-1
D
-10
24
What is the LCM of 4 and 6?
A
8
B
12
C
18
D
24
25
Simplify: 18 ÷ 2 × 3
A
9
B
18
C
27
D
36
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