Aptitude - Square Root and Cube Root - Discussion
Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 2)
2.
| What should come in place of both x in the equation | x | = | 162 | . |
| 128 | x |
Answer: Option
Explanation:
| Let | x | = | 162 |
| 128 | x |
Then x2 = 128 x 162
= 64 x 2 x 18 x 9
= 82 x 62 x 32
= 8 x 6 x 3
= 144.
x = 144 = 12.
Discussion:
35 comments Page 2 of 4.
Parag said:
10 years ago
What is the meaning of ^?
Feroz said:
10 years ago
@Jiyan prathap.
This is not working to roots I thinks so but it useful for me.
This is not working to roots I thinks so but it useful for me.
Pbk said:
9 years ago
@Parag.
Meaning of ^(Circumflex/Caret).
Circumflex : It is a symbol used to represent a number to the power of the other number. The symbol of circumflex is ^. This symbol is also referred as Hat or Caret.
Example:-
2^3 (ie:- 2 to the power of 3).
2^3 = 2*2*2.
Meaning of ^(Circumflex/Caret).
Circumflex : It is a symbol used to represent a number to the power of the other number. The symbol of circumflex is ^. This symbol is also referred as Hat or Caret.
Example:-
2^3 (ie:- 2 to the power of 3).
2^3 = 2*2*2.
Mahesh said:
9 years ago
Thanks @Sameer.
Apeksha said:
8 years ago
x^2 = root of 128 * 162.
= root of 20736.
x^2 = 144,
x = root of 144,
x = 12.
= root of 20736.
x^2 = 144,
x = root of 144,
x = 12.
Siva Sai said:
8 years ago
Well Explained. Thank You.
Mani Ratan said:
1 decade ago
Can we do 162=81*2 please solve it by other process?
Sharana said:
1 year ago
Thanks all for explaining the answer.
Govind said:
1 decade ago
The above said method is easy to find. Because we can split the no by using the square values we know.
Sreedevi said:
1 decade ago
You can see that 162 is divisible by 9.i.e.(1+6+2)=9 which is a multiple of 9.so it makes calculation easier if one factor is a perfect square. You can split 162 as 81*2 also where 81 is a perfect square.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers