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 2 of 7.
Jyothis said:
1 decade ago
It is a simple problem
(0.000216)= (216/10^6)
(216/10^6)= ((6*6*6)/(10^2*10^2*10^2))
By taking the cube root now
((6*6*6)/(10^2*10^2*10^2))^(1/3)= (6/10^2)
6/100=0.06ans
(0.000216)= (216/10^6)
(216/10^6)= ((6*6*6)/(10^2*10^2*10^2))
By taking the cube root now
((6*6*6)/(10^2*10^2*10^2))^(1/3)= (6/10^2)
6/100=0.06ans
Madhavi said:
9 years ago
Friends, I can't understand it.
1^3 = 1, 2^3 = 8, 3^3 = 7, 4^3 = 4, 5^3 = 5, 6^3 = 6, 7^3 = 3, 8^3 = 2, 9^3 = 9.
Can someone explain please?
1^3 = 1, 2^3 = 8, 3^3 = 7, 4^3 = 4, 5^3 = 5, 6^3 = 6, 7^3 = 3, 8^3 = 2, 9^3 = 9.
Can someone explain please?
Simmu said:
1 decade ago
@Sangita.
Remember that very simple 1^3=1, 2^3=8, 3^3=7, 4^3=4, 5^3=5, 6^3=6, 7^3=3, 8^3=2, 9^3=9.
So 216 unit digit is 6 so guess 6^3=216.
Remember that very simple 1^3=1, 2^3=8, 3^3=7, 4^3=4, 5^3=5, 6^3=6, 7^3=3, 8^3=2, 9^3=9.
So 216 unit digit is 6 so guess 6^3=216.
Ranjini said:
1 decade ago
@Yogi I can't understand please give a brief explanation for solve it. And one thing I don't know the formulas so please help me.
Vikas said:
10 years ago
Thanks to all I got more knowledge about maths. And I request you to all made me understand about how to solve fraction please.
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.
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.
Anil said:
1 decade ago
Easy method:
0.000216 = [216/10^6].
[0.000216]^1/3 = [216/10^6]^1/3.
= [6^3/10^6]^1/3.
= [6/10^2].
= 6/100=0.06.
0.000216 = [216/10^6].
[0.000216]^1/3 = [216/10^6]^1/3.
= [6^3/10^6]^1/3.
= [6/10^2].
= 6/100=0.06.
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.
Kirthana said:
6 years ago
@Reshma, the cube of 6 is 216. Not 196.
And, how is it 0.06? what should we do?
please, anyone, explain me.
And, how is it 0.06? what should we do?
please, anyone, explain me.
(2)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers