a number timesd itself
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When you multiply a number by itself, you square the number. The square of 3 is 9.
You mean 'does' not 'dose'... It means exactly what it says - round up the number to the next whole. for example - if the number was 23.6... you would simply round it up to 24.
An integer is any positive or negative whole number
Not sure what you mean by "perfect square root".A "perfect square" is the square of a whole number; if that's what you mean, yes, it's the square of the number 1.
If by 'perfect number' you mean 'perfect SQUARE', then yes. 49 is an odd number and a perfect square.