factors and multiples

this number is a factor of all the numbers

• 0

• 1

• number itself

• 2

this number is the multiple of ALL the numbers

• 1

• 2

• 0

• every number

Factors of 72 are

• 2,3,6,9,24,72

• 1,2,3,4,5,6,8,9,12,18,24,36,72

• 2,3,4,6,8,9,12,18,24,36

• 1,2,3,4,6,8,9,12,18,24,36,72

LCM of 15 and 45 is

• 45

• 15

• 30

HCF of 36 and 20 is ...... ?

• 720

• 18

• 9

• 4

HCF x LCM (of 2 numbers) = ______________

• 0

• always 1

• product of two numbers

• i don't know

1,3,7,9,21,63 are the factors of ................ ?

• 21

• 63

• 81

• 189

what will you write in ones place of 6 7 8 2 0 ___ so that the number is divisible by 9?

• 2

• 3

• 4

• 5

1197 divisible by

• 7 and 11

• 11

• 7

• none of the above

Numbers, which do not have any common factor between them other than one, are

• prime numbers

• even numbers

• combine numbers

• co-prime numbers