Question

the number 21,408
what is it divisible by ?
2,3,4,5,6,8,9,10,12
HELP !!!!

Answer 1

You can use a calculator to figure that out. :)

Answer 2

There's also some easy tricks you can use. For example, to find if it's divisible by 2, look at the last digit. If the last digit is divisible by 2, the entire number must be divisible by 2.

Since 2 divides 8, 2 divides 21,408.

Answer 3

To check for 3, add the digits together. If 2+1+4+0+8 =15 is divisible by 3, so is 21,408.

Answer 4

even number so divisible by 2
sum of numbers 2+1+4+0+8=15, so divisible by 3 as 15 is divisible by 3
last two digits 08 is divisible by 4 so divisible by 4
Not divisible by 5 as last right digit is not 5 or 0
since divisible 3 and 2, it is divisible by 6
last two digits on rigt 08 are divisible by 8.so divisible by 8
sum of all digits is 15, not divisible by 9
doesnt end with 0, not divisible by 10
as it is divisible by both 3 and 4, it is divisible by 12

Answer 5

@sumanthy all correct except for divisibility by 8. You need to check the last three digits instead of the last two digits. However, since 408 is divisible by 8, 21,408 is divisible by 8.

Answer 6

Thank you @KingGeorge , its my bad :)

Answer 7

thank you very body