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