A perfect number is one that is the sum of all its factors other than itself.
For example, the factors of 28 are 1, 2, 4, 7 and 14; 1 + 2 + 4 + 7 + 14 = 28.
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There is no "perfect" science, just science as it is.
perfect square <47
We learn math using numbers because that is math. Also when you get to a higher level in math it is easier to use numbers to write 4,137,985,034.152 than splleing it out.
Time is measured by numbers and math is all about numbers.
Math is made of numbers and variables. Most things in the world involve math. To me, it means numbers and numbers -- nothing else.