Aptitude - Square Root and Cube Root - Discussion
Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 1)
1.
The cube root of .000216 is:
Answer: Option
Explanation:
| (.000216)1/3 | = |  |
216 |  |
1/3 |
| 106 |
| = | |
6 x 6 x 6 | |
1/3 |
| 102 x 102 x 102 |
| = | 6 |
| 102 |
| = | 6 |
| 100 |
= 0.06
Discussion:
63 comments Page 7 of 7.
Mohd aquib ansari said:
1 decade ago
Hey Ranjini, there is no formula to use in this problem.
See here carefully,
we write 2/10 = 0.2.
3/10 = 0.3.
4/10 = 0.4.
And so on..
2/100 = 0.02.
3/100 = 0.03.
4/100 = 0.04.
and so on...
So we can write,
216/1000000 = 0.000216.
And know that,
216/1000000=6*6*6/100*100*100.
So we can say that,
The cube root of 0.000216.
or 216/1000000 = 6/100 = 0.06.
See here carefully,
we write 2/10 = 0.2.
3/10 = 0.3.
4/10 = 0.4.
And so on..
2/100 = 0.02.
3/100 = 0.03.
4/100 = 0.04.
and so on...
So we can write,
216/1000000 = 0.000216.
And know that,
216/1000000=6*6*6/100*100*100.
So we can say that,
The cube root of 0.000216.
or 216/1000000 = 6/100 = 0.06.
Swathi said:
1 decade ago
0.06.
It is a simple num so easy to find. For large num how to find ? please tell me any simple way if any body know.
It is a simple num so easy to find. For large num how to find ? please tell me any simple way if any body know.
Sangita said:
1 decade ago
But how guess the 216 is obtain by 6*6*6....?
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