If you multiply any three digit number
by 11 and then again multiply the product with 91 then see the
result.

see the number 578 repeats in the result

The sum of its digits is 4 + 9 + 1+ 3 = 17

The cube root of 4913 = 17

For example

Let us take a 3 digit number 578

now 578 x 11 = 6358

then 6358 x 91 = 578578

Another example 741

741 x 11 = 8151

8151 x 91 = 741741

**Special Cube Roots**

Check the number 4913

The sum of its digits is 4 + 9 + 1+ 3 = 17

The cube root of 4913 = 17

**case 2**: 5832

The sum of its digits is 5 + 8 + 3+ 2
= 18

The cube root of 5832 = 18**case 3**: 19683

Sum of digits 1 + 9 + 6 + 8 + 3 = 27

The cube root of 19683 = 27
yeah its right

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