Question

Find the greatest number of
*4
*6
*8
*10
*digits which is a perfect square

Answer 1

1) 9801=99×99
2) 998001=999×999
3) 99980001=9999×9999
4) 9.9998e9=99999×99999

Answer 2

9801. 4 digit greates perfect square

998001. 6 .......................
99980001. 8.................
9999800001. 10 digit.............

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