Online Test — Factors & Multiples
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
easy
The only even prime number is…
2
4
6
0
Explanation: 2 is the only even prime.
Question 2 of 10
hard
How many factors does 16 have?
3
4
5
6
Explanation: 1, 2, 4, 8, 16 → five factors.
Question 3 of 10
hard
Which is a common multiple of 3, 4 and 6?
12
9
8
10
Explanation: 12 is divisible by 3, 4 and 6.
Question 4 of 10
medium
The smallest common multiple of 2 and 7 is…
9
14
21
7
Explanation: No common factor, so 2 × 7 = 14.
Question 5 of 10
easy
Which of these is a factor of 15?
2
5
4
7
Explanation: 15 ÷ 5 = 3 exactly.
Question 6 of 10
easy
Which number is COMPOSITE?
7
13
9
5
Explanation: 9 = 1, 3, 9, so it has more than two factors.
Question 7 of 10
easy
Which is a common multiple of 2 and 3?
6
8
9
10
Explanation: 6 is in both the 2- and 3-times tables.
Question 8 of 10
hard
The smallest composite number is…
1
2
3
4
Explanation: 4 is the smallest composite (factors 1, 2, 4).
Question 9 of 10
hard
The smallest common multiple of 6 and 8 is…
24
48
12
16
Explanation: 24 is the first number in both tables.
Question 10 of 10
easy
The first four multiples of 3 are…
3, 6, 9, 12
1, 3, 6, 9
3, 13, 23, 33
3, 5, 7, 9
Explanation: 3 × 1, 2, 3, 4 = 3, 6, 9, 12.