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How can I tell whether a number is a square number?
You can tell whether a number is a square number by looking at the last digit. A perfect square number ends with either 1, 4, 5, 6, 9 or 00.
Is 2002 a square number?
Try it out. Take the square root on a calculator, and see whether you get a whole number.
To check whether the given number is an Avogadro number or not?
45
To check whether given number is a prime number or not?
See whether the number is divisible by 2, and by all odd numbers up to the square root of the number. For numbers up to 100, it is enough to check the factors 2, 3, 5, and 7. For higher numbers you need to check more factors. For very large numbers (for example, hundreds of digits), more efficient methods are known, but those methods are also more complicated.
How do you determine if a number is a square number?
To check if your number is a square number, draw little dots. like, for 4 it will 2 dots by 2 dots. if this doesn't work equally, it is not a square number.
