multinomial coefficient
when n1 + n2 + ⋯ + nk = n.
This is the coefficient of 
in the expansion of (x1 + x2 + …xk)n. It also gives the number of ways of choosing ni of each of k types when choosing a total of n objects, without regard to the order in which they are chosen.
- Freedman, Michael Hartley
- free group
- freely hinged
- free module
- Frege, (Friedrich Ludwig) Gottlob
- frequency
- frequency
- frequency analysis
- frequency distribution
- frequentist inference
- Freudenthal, Hans
- Frey's curve
- friction
- frieze group
- Frobenius endomorphism
- Frobenius, (Ferdinand) Georg
- Frobenius normal form
- from above, from the right
- from below, from the left
- frontier
- FRS
- frustum
- Fry, Hannah
- Fubini's Theorem
- fulcrum