is 819 a perfect square show your working
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No 819 is not a perfect square
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819 is not a perfect square
Step-by-step explanation:
The given number is 819
The digit at ones place is 9
We know that 9 is square of 3
Also if 7 is squared we get digit at unit place = 9
Therefore, if 819 is a perfect square of a number then the digit at the unit place of that number must be either 3 or 7
Now the first digit of the number 819 is 8
2² < 8 < 3²
Therefore,
If we take number as 23 then
23² = 529
And 33² = 1089
If the digit at unit place is 7 then
27² = 729
Thus
27² < 819 < 33²
Therefore, 819 is not a perfect square
Hope this answer is helpful.
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