1-Factors and Multiples

Which one is factor of 49

• 4

• 7

• 9

• 6

Answer explanation

The factor of 49 is a number that divides evenly into 49 without leaving a remainder. Among the choices given, 7 is a factor of 49 because 7 x 7 = 49.

Which one is multiple of 8

• 12

• 22

• 32

• 42

Answer explanation

The correct choice is 32 because it is a multiple of 8, as 8 x 4 = 32.

Which one is factor of 63

• 13

• 7

• 5

• 2

Answer explanation

The factor of 63 is a number that divides evenly into 63 without leaving a remainder. Among the given choices, 7 is a factor of 63 because 63 divided by 7 equals 9.

Which one is multiple of 6

• 61

• 54

• 44

• 31

Answer explanation

The correct choice is 54 because it is a multiple of 6, as 6 x 9 = 54.

Which one is factor pair of 12

• 2, 3

• 4, 6

• 6, 2

• 12, 2

Answer explanation

The factor pair of 12 is 6 and 2 because when multiplied together, they equal 12 (6 * 2 = 12).

Which one is factor pair of 28

• 28, 2

• 7, 14

• 14, 4

• 14, 2

Answer explanation

The factor pair of 28 is 14 and 2 because when multiplied together, they equal 28 (14 * 2 = 28).

Which one is factor pair of 64

• 8, 8

• 8, 4

• 16, 6

• 32, 2

Answer explanation

The factor pairs of 64 are (8, 8) and (32, 2). Both 8 and 32 are factors of 64, along with 2. Therefore, the correct factor pairs are 8, 8 and 32, 2.

Which one of the following is prime number

• 1

• 10

• 15

• 5

Answer explanation

The prime number among the choices is 5, as it is only divisible by 1 and itself, with no other factors. The other numbers have multiple factors.

Which one of the following is prime number

• 23

• 28

• 32

• 27

Answer explanation

The prime number among the options is 23, as it is only divisible by 1 and itself, while the other numbers have additional factors. Therefore, 23 is the correct choice.

Which one of the following is prime number

• 66

• 67

• 68

• 69

Answer explanation

The prime number among the choices is 67, as it is only divisible by 1 and itself, unlike the other options which have multiple factors.