qwerty_019
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your password needs at least eight numbers, letters, or other fillers in it
It means to find what numbers the variables (the letters) must be in order to make the equation a true statement.
words and maths...hm Well if you mean letters in math then they are pro numerals, which are used in algebra to represent numbers. Words in maths may represent numbers also, otherwise i am unsure
262. Here's how:Let's look at 1 to 99, where 18 number contain a 9 digit. First there is 1 to 89, which 8 numbers contain the nine: {9,19,29,...89}, then all ten of the 90's have a 9, so that's 18. The next 8 groups, [101-199], [201-299] ... [801-899] follow this same pattern. and finally all 100 of the numbers [900 - 999] contain a 9.So it is 100 + (9 x 18) = 262This assumes you mean whole numbers only, as decimals or rationals would create an infinite set of numbers (unless you limited it to a certain number of decimal places)
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