Question

Write the divisibility rule for 5 and 15

Answer 1

Number that are divisible by 5 must end in 5 or 0.
Example 10 & 15
Numbers that are divisible by 15 are factors of 3 & 5
Example 30 & 45.

Answer 2

For 5,
The last digit of the given number should be divisible by 5,i.e, it should be either 5 or 0  
Example- 245 The last digit is divisible by 5 so, the number is divisible by 5

For 15,
the given number should be divisible both by 3 and 5
Example- 225 the number is divisible by 3 and also by 5 . Thus the number is divisible by15