Aptitude - Square Root and Cube Root - Discussion
Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 12)
12.
0.0169 x ? = 1.3
Answer: Option
Explanation:
Let 0.0169 x x = 1.3.
Then, 0.0169x = (1.3)2 = 1.69
 x = |
1.69 | = 100 |
| 0.0169 |
Discussion:
12 comments Page 1 of 2.
Bathula suresh said:
1 decade ago
The given value is 169/10000,so while applying root to the value we get 13/100, i.e;0.13
So if we multiply with 10 .den we get 1.3
ANS=10
So if we multiply with 10 .den we get 1.3
ANS=10
Guru said:
1 decade ago
No answer is not 10 because we have remove the square root from 0.0169X
So (1.3)2
then,
0.0169X= (1.3*1.3)
0.0169X=1.69
X=1.69/0.0169
x=169/100/169/10000
then x= 169/100 * 169/10000
x=100 answer
So (1.3)2
then,
0.0169X= (1.3*1.3)
0.0169X=1.69
X=1.69/0.0169
x=169/100/169/10000
then x= 169/100 * 169/10000
x=100 answer
Parag said:
1 decade ago
No need to calculate simply how many digit(0)need to get 1.69 from 0.0169 that 2 digit need to move from right side from 0.0169 to left side that much zero need to add to 1.
Ravi said:
1 decade ago
@Guru.
If you remove the square root from 0.0169X, then why you have squared 1.3 like (1.3)^2.
If you remove the square root from 0.0169X, then why you have squared 1.3 like (1.3)^2.
Radhika K R said:
1 decade ago
Hey, Answer must be 100:
13 * 10^(-2) * root(x) = 1.3.
root(x) = 1.3 / (13 * 10^(-2) ).
root(x) = 10.
x = 10 * 10 = 100.
13 * 10^(-2) * root(x) = 1.3.
root(x) = 1.3 / (13 * 10^(-2) ).
root(x) = 10.
x = 10 * 10 = 100.
Ashish said:
1 decade ago
Yes the answer is 100.
Root of (0.0169*x) = 1.3.
Root of (169/10000*x) = 1.3.
13/100*(root of x) = 1.3.
Root of x = 1.3*(100/13).
Root of x = 10.
So finally x= square of 10 which is 100.
Root of (0.0169*x) = 1.3.
Root of (169/10000*x) = 1.3.
13/100*(root of x) = 1.3.
Root of x = 1.3*(100/13).
Root of x = 10.
So finally x= square of 10 which is 100.
Kewal said:
8 years ago
Thanks for all your explanation of the answer.
Aleena said:
5 years ago
Answer is 10. How it will be 100?
(1)
Archana padhi said:
5 years ago
The Correct Answer is 10.
(2)
Asna said:
4 years ago
10 is the right answer.
(2)
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