# Unit Quiz: Factors Multiple and Primes

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## Q1.True or False, three of these numbers are prime and more than 20. 1. True
2. False

1. False

## Q2.Which number lies in the intersection (middle) of this Venn diagram? 1. 10
2. 6
3. 2
4. 2 and 2

1. 2

1. 1
2. 2
3. 3
4. 4

1. 2

1. 2 and 38
2. 7 and 33
3. 17 and 23
4. 29 and 21

1. 17 and 23

## Q5.The product of which two prime numbers find another prime number?

### Options:

1. 2 and 3
2. 2 and 7
3. 13 and 11
4. None of these

1. None of these

## Q6. 1. True
2. False

1. True

## Q7. 1. A
2. B
3. C
4. D

1. C

## Q8. 1. A
2. B
3. C

1. C

## Q9.True or False 1. True
2. False

1. True

## Q10.Q1) Write 4 x 14 as a product of prime factors. 1. A
2. B
3. C
4. D

1. C

## Q11.Which number is missing from this diagram? 1. 2
2. 3
3. 4
4. 9

1. 3

## Q12.Write 300 as the product of prime factors in index form. 1. A
2. B
3. C
4. D

1. D

## Q13.Find the missing number/s. 1. 2
2. 3
3. 4
4. 2 and 3

1. 3

1. 45
2. 90
3. 6
4. 15

1. 90

## Q15.Which are the factors of 28?

### Options:

1. 4 and 7
2. 1, 4 and 7
3. 1, 2, 4, 7, 14 and 28
4. 14 and 2

1. 1, 2, 4, 7, 14 and 28

## Q16.Which numbers are missing from the Venn diagram? ### Options:

1. 2 and 0
2. 80 and 160
3. 2 and 8
4. 1, 2 , 4 and 8

1. 2 and 8

## Q17.A number less than 20 is missing from the Venn diagram. What is the missing number? 1. 15
2. 20
3. 18
4. 16