NUMERACY REVISION QUESTIONS

Find the greatest number which will divide into 24, 32 and 80 without remainders

• 2

• 8

• 12

• 15

Express 80 as a product of its prime factors

• 2³ x 5

•  2⁴ x 5

• 2⁴ x 5²

• 2² x 5³

The highest common factor of 18, 24, and 56 is

• 3
• 5
• 10
• 2

Which of these groups have 36 as their common multiple?

• 5, 7, 11, 13, 17, 19, 36
• 4, 8, 16, 20, 24, 28, 36
• 1, 2, 4, 8, 16, 32, 36
• 2, 3, 6, 9, 12, 18, 36

Find the L.C.M of 36 and 45

• 180
• 72
• 120
• 81

What is the smallest number which can be divided exactly by 24, 32 and 40?

• The LCM of 24, 32, and 40 is 200
• The LCM of 24, 32, and 40 is 480.
• The LCM of 24, 32, and 40 is 120
• The LCM of 24, 32, and 40 is 60

Find the smallest number which has a remainder of 3 in each case when divided by 9, 12 and 18.

• 87

• 42

• 36
• 39