In competitive exams some time this type of questions come - if 61208 is divisible by 7 or is 113672 is divisible by 13. Vedic maths divisibility test is an easy way know the divibility. Given below are the divisibility test numbers in table form.
|2||Numbers ending with 0, 2,4,6,8|
|3||Add up the digits. If the sum is divisible by 3 then number is divisible by 3|
|4||If the number formed by the 2 digits is divisible by 4, then the whole number is diivisible by 4|
|5||If the last digt is either 5 or 0.|
|6||Check the divisibility test of 2 and 3. If divisible by 2 and 3 then it is divisible by 6.|
|7||Double the last digit and subtract it from the remaining number. If what is left is divisible by 7, then the original number is also divisible.|
|8||If the last three digits are divisible by 8, then the whole number is divisible by 8|
|9||Add the digits if the sum is divisible by 9 then the whole number is divisible by 9. (this holds true for any poer of three.|
|10||If the number ends in zero|
|11||If the difference between
|12||Check the divisibility by 3 and 4|
|13||Delete the last digit from the given number, Then subtract 9 times the deleted digit from the remaining number. If what is left is divisible by 13, then so is the original number.|
In the same way we can continue the table.. for divisibility by 14, check fo divisibility by 2 and 7. For divisibility by 15, check for divisibility by 3 and 5 and so on.
Is 25467895 is divisible by 5
Answer is yes because it has 5 last digit.
Is 2665 is divisible by 13?
Delete Last digits 5, sbtract 9X5=45 from 266 balance is 221. it is divisible by 13 so that whole number is divisible by 13.
If the number 4107501 is divisible by 9.
Answer. Add numbers 4+1+0+7+5+0+1=18, it is divisible by 9. So the number is divisible by 9.
If the number 12690864 is divisible by 8?
Answer: if last three numbers are divisible by 8 then whole number is divisible by 8. 864 is divisible by 8. Answer is yes.
"Vandana Sachar, M.A. Eco, teaching Vedic Maths for the last 15 years"
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