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 6 of 7.
Murali said:
1 decade ago
6/102 can you people explain me how you got this step?
Mark said:
1 decade ago
Thanks namarta.
Ravi said:
1 decade ago
Thanks namrata.
Namrata said:
1 decade ago
Always keep in mind that a cube root of six digit number is two digit number so cube root of .000216 is .06 and not .6.
Chandu said:
1 decade ago
Is there any shortcuts for finding cube roots and square roots? It there please tell me.
Sangeetha said:
1 decade ago
Naseer please can you elaborate your solution.
Pravin raj said:
1 decade ago
Obviously its corret.
Afrin said:
1 decade ago
Why 6/10 (2) ?
Afrin said:
1 decade ago
Why divided 216 by 10(6) and after that 6*6*6
---------
10(2)*10(2)*10(2)
I cant understand this solution...
---------
10(2)*10(2)*10(2)
I cant understand this solution...
Naseer said:
1 decade ago
See guys the simple technique is just watch the last digit i.e 6.
Now multiply the last digit in the options that should be tally with the last digit in the question.
Now observe total no of zeroes after .(decimal)
Got it?
Now multiply the last digit in the options that should be tally with the last digit in the question.
Now observe total no of zeroes after .(decimal)
Got it?
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