1. Give reason to show that none of the numbers given below is a perfect square:
(i) 5372
(ii) 5963
(iii) 8457
(iv) 9468
(v) 360
(vi) 64000
(vii) 2500000
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Answered by
33
concept used:- a perfect square has only 1,4,9,6,5,0 at its unit digit and has even number of zeroes.
so here is the answer
1.
(i) 5372:- unit digit is 2 so it is not a perfect square.
(ii) 5963:- unit digit is 3 so it is not a perfect square
(iii) 8457:- Unit digit is 7 so it is not a perfect square.
(iv) 9468:- unit digit is 8 so it is not a perfect square
(v) 360 :- it has odd number of zeroes so it is not a perfect square
(vi) 64000:- it has odd number of zeroes so it is not a perfect square
(vii) 2500000:- it has odd number of zeroes so it is not a perfect square.
hope it helps you
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Answered by
3
Answer:
5372 .
Last no should no be = > 2 , 3 , 7 or 8 to be a perfect square .
It is not a perfect square .
5963 .
Last no should not be = 3
It is not a perfect square .
8457 .
Last no should no be 7 .
It is not a perfect square .
9468 .
Last no should not be 2 , 3 , 7 or 8 .
It is not a perfect square .
360 .
Last no should not be single zero .
It is not a perfect square .
64000 .
Last three no should not be three zero's .
It is not a perfect square .
2500000 .
Last five digits are zero which cannot make pair , hence it is not a perfect square
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