Aptitude - Square Root and Cube Root - Discussion
Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 4)
4.
1.5625 = ?
Answer: Option
Explanation:
1|1.5625( 1.25
|1
|-------
22| 56
| 44
|-------
245| 1225
| 1225
|-------
| X
|-------
1.5625 = 1.25.
Discussion:
62 comments Page 7 of 7.
Shivaji said:
3 months ago
Given (1.5625)^2.
= (15625/10000)^2,
= (5*5*5*5*5*5/10*10*10*10)^2,
= (5^2*5^2*5^2/10^2*10^2)^2,
= 5*5*5/10*10.
= 125/100.
Then the answer is 1.25.
= (15625/10000)^2,
= (5*5*5*5*5*5/10*10*10*10)^2,
= (5^2*5^2*5^2/10^2*10^2)^2,
= 5*5*5/10*10.
= 125/100.
Then the answer is 1.25.
(1)
Mouni said:
1 week ago
√1.5625
Step 1. Check the last digit possibility 5 = 5,
Step 2. Strike off the last three digits.
Step 3. The remaining value is close to the perfect square root i.e 5 is nearly √2=4=2.
√1 = 1
Therefore, the result is = 1.25.
Step 1. Check the last digit possibility 5 = 5,
Step 2. Strike off the last three digits.
Step 3. The remaining value is close to the perfect square root i.e 5 is nearly √2=4=2.
√1 = 1
Therefore, the result is = 1.25.
(1)
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