1.

Find the cube root of 238328?1. 522. 423. 624. 725. 22

Answer» Correct Answer - Option 3 : 62

Given:

The given number = 238328

Concept:

Calculation skills trick

Calculation:

Step(1):

First, we will take the digit at the unit’s place.

At the unit place, we have 8.

Step(2):

Now consider the cube table, the cube of which number has 8 at the unit digit place.

We see, 2 x 2 x 2 = 8.

Step(3):

That means the cube root of 238328 will have 2 at the unit place.

Step(4):

Now ignore the last 3 digits of 238328, i.e. 328

Step(5):

Taking 238 as a reference number, we can see from the cubes table 238 lies between cubes of 6 and 7.

Step(6): Here, we choose the lower number i.e. 6

∴ We get the two digit of the answer

∴ Cube root of 238328 = 62 


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