Question

Check whether 72912 is divisible by 2,3,4,5,6,7,8,9 explaining the
rules.​

Answer 1

Solution: Firstly, for checking a number to be divisible with a number we should no the divisibility tests for each number which are :

2 - The number divisible should be an even number

3 - The number divisible when added should be 3 or multiples of 3

4 - The number divisible should be 4 or multiples of 4

5 - The number divisible should have 5 in the units place

6 - The number divisible should be 6 or multiples of 6

7 - The number divisible should be 7 or multiples of 7

8 - The number divisible should be 8 or multiples of 8

9 - The number divisible when added should be 9 or multiples of 9

As per the above tests , the number 72912 is divisible by 2,3,4,6,7 and 8

Hope it helps!

Answer 2

Answer: 72912 is divisble by

2,3,4,6,7,8

Step-by-step explanation:

Divisibilty Check

By 2: The last digit of no. should be even

(In this case, 2 is even Therefore, Divisble)

By 3: The sum of all the digits in a no. should be divisible by 3 ( 7+2+9+1+2 = 21 and 21 is divisible by 3, Therefore 72912 is divisble)

By 4: The ending two digits should be divisble by 4 (ending digit 12 is divisible by 4 Therefore 72912 is divisble)

By 5: The last digit should be 5 or 0 ( in this case last digit is 2 Therefore 72912 Is not divisible)

By 6: The no. (72912) should by divisible by 2 and 3 in this case it is Therefore 72912 is divisble

By 7: Take the last digit(2) and double it (4) and subtract that result from the remaining digits(7291 - 4= 7287) and divide it by 7 and it should be divisible

In this case 72912 is divisble

By 8: Last three digits should be divisible (912) is divisible Therefore it is divisible

By 9: Total sum should by divisible by 9 (21 is not divisible by 9) Therefore not divisible