What if the coefficient of x^6y^4 in the expansion of (x+y)^10
a.) 1
b.) 5
c.) 210
d.) it does not exist.

C) 210

Step-by-step explanation:

Using binomial expansion for

we have general term

Now we want the term which has 10-r =6 or r =4

Hence coefficient would be

10C4

=

Hence answer is option C

210

step-by-step explanation:

infinity is the answer