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Aptitude - Square Root and Cube Root - Discussion

Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 15)
Square Root and Cube Root
15.
The square root of 64009 is:
253
347
363
803
Answer: Option
Explanation:
   2|64009( 253
    |4
    |----------
  45|240
    |225
    |----------
 503|  1509
    |  1509
    |----------
    |     X
    |----------

64009 = 253.

Discussion:
41 comments Page 1 of 5.
Yuvaraj said:   2 decades ago
How 45 and 503 came in this problem please add more similar problems with explanation?
Sarath said:   1 decade ago
Please explain the step by step procedure of finding square root of a number that solves above.
Harigaran said:   1 decade ago
Please explain this problem step by step.
Deepan said:   1 decade ago
In this problem, we take first three digit i mean 640 the well before the square no is 625 which is 25 square. Then the last digit is 9, clearly ending 9 reveals that it is 3 or 7. For clarifying this do square of 255 we get 75025. It obviously tells that the answer is 253.
Dilip said:   1 decade ago
How 45 and 503 came in this problem please add more similar problems with explanation?
Sakshi said:   1 decade ago
Another way to solve it..
get the L.C.M of 64009
it will be 11*11*23*23=64009
11 square* 23square = 64009
so, the square root of 64009= 11*23=253
Amar said:   1 decade ago
Add the previous no (2+2=4) and den guess for the a no to divide 240 (ie 5, 45 * 5 = 225);

Add the previous no (45 + 5 =50) and den guess for the a no to divide 1509 (ie 3, 503 * 3 = 1509).
Ravi said:   1 decade ago
Nice explaination sakshi..
GEETHU said:   1 decade ago
Good explanation sakshi.
Google said:   1 decade ago
Easy way to solve this problem is use the all hints and multiply them 2 times you get the answer.

Example =====253*253=64009.
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