Step 1: Understand what it means for a number to be divisible by 15. A number is divisible by 15 if it can be divided by 15 without leaving a remainder.
Step 2: Know that a number is divisible by 15 if it is also divisible by both 3 and 5.
Step 3: Check if the number 70 is divisible by 3. To do this, add the digits of 70 (7 + 0 = 7). Since 7 is not divisible by 3, 70 is not divisible by 3.
Step 4: Since 70 is not divisible by 3, it cannot be divisible by 15.
Divisibility Rules – A number is divisible by 15 if it is divisible by both 3 and 5.
Divisibility by 3 – A number is divisible by 3 if the sum of its digits is divisible by 3.
Divisibility by 5 – A number is divisible by 5 if it ends in 0 or 5.
