Mathematics (Easy)

What is the least common multiple of 20 and 80?

• 360

• 80

• 240

• 480

Tiana is making bead necklaces. She has 45 green beads and 60 beads . What is thr greatest number of identical necklaces she can mae if she wants to use all of the beads?

• 12

• 15

• 16

• 18

Lana bought a big bag of candies at a warehouse store. There are 120 of candies in the bag. Lisa needs to divide the cadies. She wants to put the same number of pieces in each smal bag. How many smal bags could Lana use?

• 17

• 18

• 19

• 20

A fish company needs to ship an order of 117 fresh fishes.The company will put the fishes into several boxes. Each box must contain the same numbers of fishes. How many boxes could the company use for the order?

• 11

• 12

• 13

• 17

How many centimeters are there in 200 millimeters?

• 0.2

• 2

• 20

• 20.5

Which among the following ins NOT a prime number?

• 31

• 41

• 51

• 61

What are the prime factors of 60?

• 1 x 2 x 8

• 2 x 2 x 3 x 5

• 2 x 2 x 2 x 4 x 4

• 2 x 3 x 2x 2 x 2 x2 x 2 x 2

What are the prime factors of 51?

• 3 x 17

• 3 x 3 x 7 x 9

• 153 x 1

• 17 x 3 x 17

What are the prime factors of 9?

• 3 x 3 x 7 x 7

• 3 x 17 x 11

• 3 x 6 x 9 x 11

• 7 x 13

One trip around a running track is 50 yards. One jaggers can complete one lap in 4 minutes, the other jogger can complete it in 3 minutes. How long will it take for both joggers to arrive at their starting point together if they start at the same time and maintain their jogging pace?

• 12 minutes

• 24 minutes

• 36 minutes

• 48 minutes