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:
.6
.06
77
87
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 5 of 7.

Deepika said:   9 years ago
@Madhavi
1^3 = 1
2^3 = 8
3^3 = 27 the unit digit is taken into consideration i.e 7.
Similarly,
4^3 = 64 the unit digit is taken into account i.e 4.

And so on... Is it fine now?
(1)

Hari said:   9 years ago
A simple method, just multiplies the options 3 times we will get the answer.

Which means, 0.06 * 0.06 * 0.06 = 0.000216, we know it is impossible to get an answer from option C and D.
(2)

Jitendra said:   9 years ago
0.06 * 0.06 = 0.006.

And also,
0.006*0.06 = 0.0006.

Nimisha said:   8 years ago
Can't understand the solution. Can anyone help me?

Harrsha said:   8 years ago
How the denominator is 10^6? Please explain.

Sayedul SI said:   8 years ago
How to get 216/106?

Narsimha reddy said:   8 years ago
I Didn't get it. Please, Help me.

Sahil jaiswal said:   8 years ago
It's simple last digit of no is six then I take no six nd three no cancel then I have only.000 so it right to =0.6.

Shrishti said:   7 years ago
Can't understand. Please help me.

Ujwal chinta said:   7 years ago
Can't understand this. Please, someone explain me.


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