Find the cube root of 74088000.1. 4202. 3203. 484. 5205. None of these

1.	Find the cube root of 74088000.1. 4202. 3203. 484. 5205. None of these.
Answer» Correct Answer - Option 1 : 420 Concept used:- Trick to find cube root of a number. Method and Calculation:- • Strike out last three zeros from number and put 1 zero at the end oc answer derived from remaining number • Find the unit digit of cube root by looking at unit digit of truncated number. For cube root of 74088, unit digit must be 2 (2³ is 8) • Find other digit(s) by ignoring the last three digits of truncated number and looking at remaining digits. 64 < 74 < 125 (64 and 125 are cubes of 4 and 5, so remaining part of cube root will be 4) Hence, 420 is our answer (zero is added to final answer)

Find the cube root of 74088000.1. 4202. 3203. 484. 5205. None of these.

Answer» Correct Answer - Option 1 : 420

Concept used:-

Trick to find cube root of a number.

Method and Calculation:-

• Strike out last three zeros from number and put 1 zero at the end oc answer derived from remaining number

• Find the unit digit of cube root by looking at unit digit of truncated number.

For cube root of 74088, unit digit must be 2 (2³ is 8)

• Find other digit(s) by ignoring the last three digits of truncated number and looking at remaining digits.

64 < 74 < 125 (64 and 125 are cubes of 4 and 5, so remaining part of cube root will be 4)

Hence, 420 is our answer (zero is added to final answer)

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