They are both stating the same thing, and often can be used interchangeably. The difference is purely in the application, or use. If you are doing math calculations, you want a 'numerical' statement as in 2, in writing, often the alphabetical 'two' is better.
You can use 'two' in mathematics, but '2' is a shorthand method. Can you imagine trying to add
two Hundred twenty two + seventy two
instead of 222 + 72?
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(Distance between the points)2 = (difference of the two x-values)2 + (difference of the two y-values)2
The difference is 2. (23 - 21 = 2).If we are talking about two odd numbers that come right after the number 20 then we mean the two consecutive odd numbers after 20.The difference between any consecutive odd numbers (or between any consecutive even numbers) is always 2.
The next palindromic years are going to be 2112 and 2222. There is a 100 year difference between the two.
2-3
3 & 5.