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Question

What does N mean in math?


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Solution

The alphabet N has various meanings in mathematics.

  • Nis used to denote the set of all the natural numbers. The natural numbers are non-zero, positive whole numbers. N=1,2,3,4,........
  • In geometry, n can be used to name a line and Ncan be used to name a point.
  • In statistics, N is the number of observations in the sample and N is the number of observations in the population.
  • In algebra, ncan be used to name an unknown variable in the same way the other alphabets are used.
  • In the SI unit system, the unit of force is Newton which is denoted by N.
  • The formula of combination is Crn=n!r!n-r!, where r items are chosen from n number of items without replacement and the order of items does not matter.
  • The formula of combination is Prn=n!(n-r)!, where r items are chosen from n number of items without replacement, and the order of items matters.

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