a Kendyl LeGrand 9 éve
343
Még több ilyen
nCr
n! / n1! * n2! * nk!
nPr
n!= 1*2*...n
P(E)= number of outcomes with E/ total number of outcomes
P(A)= number of ways A occurs/ number of different simple events
P(A and B)= P(A) * P(B) - P(B/A)
P(A and B)= P(A) * P(B)
P(A or B)= P(A) + P(B)- P(A and B)
P(A or B)= P(A) + P(B)