Question

conclusion on divisibility rules

Answer 1

Answer:

If we examine all four numbers, only the number 309 doesn't end with 0, 2, 4, 6, or 8. We can conclude that all the numbers above except 309 are divisible by 2.

A number is divisible by 3 if the sum of the digits of the number is divisible by 3.

Hope it helps...

Answer 2

Answer:

here goes -

Step-by-step explanation:

2 - check if num is even

eg - 224 is divisible, 234 is divisible, 56 is divisible, 25 not divisible

3 - add the numbers if the sum is multiple of 3 then it is divisible by 3

eg - 224 = 2 + 2 + 4 = 8 not divisible, 234 = 2 + 3 + 4 = 9 yes divisible, 56 not divisible, 25 not divisible

5 - if num is ending with "0" or "5" then it is divisible

eg - 224 no, 234 no, 50 yes, 25 yes

6 - if num is divisible by 2 and 3 then it is divisible by 6

eg - 234 yes(check up), 224 is only by 2 not 3 so no, 66 yes

9 - add the numbers if the sum is multiple of 9 then it is divisible by 9

eg - 224 = 8 no, 234 = 9 yes, 56 = 11 no, 25 = 7 no, 999 = 27 = 9 yes

10 - if it ends with "0" then it is divisible by 10

eg - 20 yes, 30, yes , 46 no

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