## Wednesday, 11 May 2022

Hello student friends, today we will see about the divisive keys / vibhajyataani chavio of issue 2 to 5.

The divisor keys / vibhajyataani chavio are used to determine very quickly whether we can easily divide any number or not.

2 divisibility key (vibhajyataani chavio) - If the unit of a number is 0,2,4,6,8 then that number can always be divisible by 2.

For example- 1) 248 - The number of the unit is 8 so 248 can be divisible by 2.

2) 5002- The unit number is 2 so 5002 can be divisible by 2.

3) 369 - The unit number is 9 so 369 cannot be divisible by 2.

The key to the divisibility of 3 (vibhajyataani chavio) - if the sum of all the digits of a number can be divisible by 3, then the given number can be divisible by 3.

For example- 1) 345- Here 3 4 5 = 12. 12 can be divided by 3 so 345 can be divisible by 3.

2) 1244- Here 1 2 4 4 = 11 happens. 11 cannot be divided by 3, so 1244 cannot be divisible by 3.

The key to the divisibility of 4 (vibhajyataani chavio) - If a number formed by a unit of a number and a decimal number can be divisible by 4, then the given number can be divisible by 4.

For example- 1) 516- Here the number formed by unit number and decimal number is 16. And 16 can be divisible by 4. So the given number can be divisible by 4.

2) 1245- Here the number formed by the unit number and the decimal number is 45. And 45 cannot be divisible by 4. So the given number cannot be divisible by 4.

5 divisible key (vibhajyataani chavio) - If the unit of a number is 0 or 5 then the number can always be divisible by 5.

For example- 1) 240 - The digit of the unit is 0 so 240 can be divisible by 5.

2) 5005- The unit number is 5 so 5005 can be divisible by 5.

3) 369 - The unit number is 9 so 369 cannot be divisible by 5.