Question

find the least which must be subtracted from 1781 to obtain a perfect square find this perfect square and it's square root​

Answer 1

Answer:

∴Required least number is 17

Step-by-step explanation:

Given number is 1781 which lie between 40² = 1600 and 45² = 2025

Now,

41² = 1681

42² = 1764

43² = 1849 which is more than the given number 1781.

∴1781 - 1764 = 17 is to be subtracted from 1781 to obtain a perfect square.

∴Required least number is 17

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