Aptitude - Square Root and Cube Root - Discussion

Discussion :: Square Root and Cube Root - General Questions (Q.No.11)

11. 

625 x 14 x 11 is equal to:
11 25 196

[A]. 5
[B]. 6
[C]. 8
[D]. 11

Answer: Option A

Explanation:

Given Expression = 25 x 14 x 11 = 5.
11 5 14

Diana said: (May 30, 2013)  
How to solve this problem?

Gannu said: (Aug 11, 2013)  
Sqrt (625) = 25;.

Sqrt (196) = 14;.

Sqrt (25) = 5;.

Here sqrt = square root of "<number>";

Hence put those in expression and get the value.

Renu Bisht said: (Sep 1, 2014)  
Is there any trick to get square root of larger number?

Ramya said: (Feb 20, 2015)  
Writing their root values and calculate.

Pooja Singh said: (Jun 23, 2015)  
How the answer coming 5 please explain me?

Pooja Halder said: (Jun 30, 2015)  
25/5=5 and 11 and 14 is been cancelled out.

Ajo Kunju said: (Oct 19, 2015)  
How the answer 5 be possible?

Pooja said: (Jun 14, 2016)  
How 5?

The answer is 1.78 or 25/14.

Amandeep Kaur said: (Jun 7, 2017)  
Ans is 5.

@Pooja and @Ajo

Sqrt of 625 is 25 * 25,
Sqrt of 25 is 5 * 5,
Sqrt of 196 os 14 * 14.

Now we will write
25/11 * 14/5 * 11/14then if we cut these we will get 25 will cancel by 5 in 5 as 5 * 5 is 25.
11/11 will be same and that's why it will cut as well as 14 /14 it will also be cut.
So, finally, 5 is left so the real answer is 5.

Ankit Maharia said: (Jul 15, 2018)  
@All.

When we make square root then it must be done for both numerator and denominator.

M Dhanush said: (Apr 24, 2019)  
25/11 * 14/5 * 11/14 = 5.

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