Playing with numbers

lcm of 30 and 60

lcm of 10, 20 annd 28

• 140

• 100

• 20

• 2

hcf of 28 and 77 in venn diagram method

A number has 15 as a factor. Can you give two other factors of that number?

• 2,3

• 3,5

• 5,7

• 7,3

Which is the largest prime number less than 100?

• 91

• 93

• 97

• 99

The number which is divisible by 7 is

• 107

• 117

• 322

• 207

71524 is divisible by 11

• True

• False

Which is the smallest prime factor of 119?

• 17

• 2

• 3

• 7

Three bottles of oil contain 120, 240,288 ml of oil respectively. Find the largest container which can measure these quantities of oil exactly?

• 24

• 60

• 120

• 249

Three bells ring at the interval of 15,20, 30 minutes respectively. If they ring together at 12 noon. When will they again ring together?

• 12:30 pm

• 12:45 pm

• 1 pm

• 1:30 pm