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 4 of 7.
Ujwal chinta said:
7 years ago
Can't understand this. Please, someone explain me.
Reshma said:
7 years ago
6*6*6 = 196 how can it be 216 here?
Parul said:
1 decade ago
Because cube root is equal to 1/3.
Like : cube root 9 is equal to 9^1/3.
Got it. Vikas.
Like : cube root 9 is equal to 9^1/3.
Got it. Vikas.
Sakshi said:
1 decade ago
Hey Murali! you are confused. Have a look.
We write 6/10= 0.6, 6/100= 0.06.
Its clear.
We write 6/10= 0.6, 6/100= 0.06.
Its clear.
Rose said:
1 decade ago
Ya correct.
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?
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...
Pravin raj said:
1 decade ago
Obviously its corret.
Sangeetha said:
1 decade ago
Naseer please can you elaborate your solution.
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