Question

1331 - What will be the 'digit at unit place in the cube root of the given number.

Answer 1

The digit at the unit place will be one itself since cube root of 1331 is 11.

HOPE IT HELPS YOU.

Answer 2

We know that,

A number multiplied by itself three times then it is called Perfect cube.

A number ending with 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 0 then it's cube ends with 1 , 8 , 7 , 4 , 5 , 6 , 3 , 2 , 0 respectively.

So, Here 1331 is the cube of some number.

1331 ended with 1 , so it's cube root should end with 1 .

Let's check it out,

Cube root of 1331

$\sqrt[3]{1331}$
$\sqrt[3]{11 \times 11 \times 11 } \\ \\ = \sqrt[3]{ {11}^{3} } \\ \\ = 11$


Therefore, Cube root of 1331 ends with 1 or

you can say that, Digit in the units place of cube root of 1331 is 1