Trick 25

To check whether the given number is divisible by 41 (or) not, the following 5 steps are needed.

• Step - 1 : First take a number, for example : 2091.

• Step - 2 : Now take the units place of the given number i.e " 1 ".

• Step - 3 : multiply this number 4 times i.e 1 × 4 = 4.

• Step - 4 : Now subtract number from the remaining number.

• Step - 5 : it means, 209 - 4 = 205

Now repeat the same process again,

That is, 5 × 4 = 20

=> 20 - 20 = 0.

Therefore, 0 is divisible by 41.

Therefore, 2091 is divisible by 7.