Find the last number which must be subtract from 402 so as to get a perfect square. Also find the square root of the perfect square so obtained ?
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Find the last number which must be subtract from 402 so as to get a perfect square. Also find the square root of the perfect square so obtained ?
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Answer:
400 (20)
Step-by-step explanation:
Lets do trial and error method.
19^2 = 361
20^2 = 400
21^2 = 441
We can see that 400 is the closest number to 402. Therefore, answer is 400 which is a perfect square of 20 and its sqr root is 20.