Question

Check whether 876 and 345 are divisible by 3 ? Also check whether 3 divides the difference of 876 and 345

Answer 1

Answer:

divisibility of 3 says add all the digits of a number and if the sum os divisible by 3 the number is divisible by 3

here 8+7+6 = 21 it is divisible by 3

3+4+5 = 12 it is also divisible by 3

difference = 876-345= 531

5+3+1= 9 it is also divisible by 3

Answer 2

★ The divisibility rule of 3 is if the sum of the digits is divisible by three then the number is concluded to be divisible by 3

★ The sum of digits in the number 876 is 8+7+6 = 21

★ Again add the digits 2+1 = 3

★ 3 is divisible by three

★ 3*1 = 3

★ Thus we can conclude that 876 is divisible by three

★ Now let's check the sum of the digits in the number 345

★ 3+4+5 = 12

★ Now let's again add the digits 1+2 = 3

★ 3 is divisible by three as 3*1 = 3

★ Thus we can conclude that 345 is divisible by three

Now here it is even asked for the difference of 876 and 345 is divisible by 3

★ First, we have to find the difference of the numbers  

★ 876-345 = 531

★ Now let's find if the number 531 is divisible by 3

★ 5+3+1 = 9

★ 9 is divisible by three as 3*3 = 9

So, as asked the numbers 876 and 345 are divisible by three and even the difference of the numbers are divisible by three

NOTE: ( * ) recognises multiplication

Happy to help.