Trick 22

To check whether the given number is divisible by 17 o(r) not, the following 5 steps are needed.

• Step - 1 : First take a number, for example : 5117.

• Step - 2 : Now take the units place of the given number i.e " 7 ".

• Step - 3 : multiply this number 2 times i.e 7 × 5 = 35.

• Step - 4 : Now subtract this number from the given number.

• Step - 5 : it means, 511 - 35 = 476.

Now repeat the same process again,

That is, 6 × 5 = 30.

=> 47 - 30 = 17.

Therefore, 17 is divisible by 17.

Therefore, 5117 is divisible by 17.