# Thread: Finding a particular term in a Binomial Expansion

1. ## Finding a particular term in a Binomial Expansion

find the 15th term in the expansion (1-t)^30

2. The Kth term of (a+b)^n is nC(k-1) A^(n-(k-1)) B^(k-1) ;where k is the term that you want

a=1, k=15, n=30, b=-t