Squares, Squares and squares.

Number Theory Level 2

Which of the options is NOT a perfect square?

8002375936 3162262756 157427208 1782950625

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Bryan Mw by Bryan MW , 17, Malaysia

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1 solution

U Z
Jan 18, 2015

Square numbers last digits are always 4 , 6 , 9 , 0 , 1 4,6,9,0,1

So the number among them which is not a perfect square is 157427208 157427208

2 Helpful 0 Interesting 0 Brilliant 0 Confused

It could also be 5

Daniel Xian - 1 year, 2 months ago

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