LCM and HCF

LCM of 3 and 5 is...

• 1

• 3

• 5

• 15

HCF of 3 and 5 is ....

• 1

• 3

• 5

• 15

Which one of the following number is a composite number?

• 3

• 5

• 7

• 9

HCF and LCM of 20 and 14 are...

• 2 dan 140

• 2 dan 70

• 3 dan 140

• 3 dan 70

LCM of 30, 54 and 72 is...

• 1800

• 1620

• 1080

• 720

The highest common factor of 28, 42, and 76 is….

• 14

• 7

• 4

• 2

Tags

CCSS.6.NS.B.4

The least common multiple of 12, 30, and 40 is…

• 40

• 60

• 120

• 160

Tags

CCSS.6.NS.B.4

Prime factorization of 240 are . . . .

• 2³ x 3 x 5

• 2⁴ x 3 x 5

• 2⁵ x 3 x 5

• 2⁶ x 3 x 5

Lamp A lights up every 15 minutes and lamp B lights up every 20 minutes. If at 09.00 the two lights turn on together, the second lamp will turn on together again for the second time at ...

• 09.30

• 09.45

• 10.00

• 10.30

The highest common factor of 12, 30, and 40 is…

• 12

• 10

• 2

• 4