I'd pick 4 or 8.
9720
you make a square number by multiplying a number times itself.
By definition, a number is square if it is the product of some whole number and itself. For example, 9 is a square number, because it is 3 times 3.100 is square, since 100=10x10.They are called square numbers, because that many stones could be neatly arranged in a square. 9 stones would make a 3 by 3 square, and 100 stones would make a 10x10.
If the number is even, it is a multiple of 2 If the sum of the digits make a number divisible by 3, the number is a multiple of 3 If the number ends in 5 or 0, the number is a multiple of 5 If the number is divisible by 2 and 3, the number is a multiple of 6 If the sum of the digits make a number divisible by 9, the number is a multiple of 9
There are no numbers that you can multiply by itself that would make a negative number.
The smallest number that you can subtract from 85232 to make it a multiple of 9 is 2
No: that would make it divisible by another number other than 1, which violates Prime Number defination. Jack
2.
i means imaginary number or what you would find the square root of to make -1
18
you cant get the square root of a negative number. nothing times itself would equal a negative number. if you have √-25 then its not possible. If you have -√25 then you take the square root of 25 and make it negative, so then it would be -5
A perfect square is the square of an integer, i.e., an integer multiplied by itself. For example, 25 is a perfect square, because 5 x 5 = 25. But, in literal mathematical terms, a perfect number is a positive integer that is the sum of its proper positive divisors, excluding the number itself. A square number is also called a "perfect square", so an example of a square number is above. So, a perfect square number would have to be a number that is both perfect and square, and there are yet to be any of these numbers "discovered".