[+] NGramsTakes a phrase and displays chracter unigrams, character bigrams, character trigrams, and character ngrams as well as word unigrams, word bigrams, word trigrams, and word ngrams. (ngrams) Also performs frequency analysis (number of instances of each letter)
Features: Calculator  Watch the VideoTags: character, word

[+] Natural Numbers 
[+] Negative Binomial DistributionCalculates the probability of the k^{th} success on the x^{th} try for a negative binomial distribution also known as the Pascal distribution.? ? It calculates the probability of exactly k successes, no more than k successes, and greater than k successes as well as the mean, variance, and standard deviation.
Features: Calculator  Quiz Generator  Practice Problem Generator  Watch the VideoTags: binomial, distribution, event, mean, probability, standard deviation, variance

[+] Net Present Value (NPV)  Internal Rate of Return (IRR)  Profitability Index 
[+] Newton Method 
[+] Nominal Yield 
[+] Nonagon 
[+] Nonagonal Number 
[+] Normal Distribution 
[+] Number Bonds 
[+] Number Line 
[+] Number Line Midpoint 
[+] Number PropertyThis calculator determines if an integer you entered has any of the following properties:
* Even Numbers or Odd Numbers (Parity Function or evenodd numbers)
* Evil Numbers or Odious Numbers
* Perfect Numbers, Abundant Numbers, or Deficient Numbers
* Triangular Numbers
* Prime Numbers or Composite Numbers
* Automorphic (Curious)
* Undulating Numbers
* Square Numbers
* Cube Numbers
* Palindrome Numbers
* Repunit Numbers
* Apocalyptic Power
* Pentagonal
* Tetrahedral (Pyramidal)
* Narcissistic (Plus Perfect)
* Catalan
* Repunit
Features: Calculator  Practice Problem Generator  Watch the Video
Examples (6): 30 as a unique number 45 as a composite number numerical properties of 100 properties of 35 tell me about 72 A(4)Tags: cube, divisor, even, number, odd, palindrome, pentagon, perfect, property, pyramid, square

[+] Numbers Word Problems 