What is the coefficient of the third term in the binomial expansion of (a + b)6?
1
15
20
90

For the binomial expansion use following formula:

When n=6, then

The third term in this expansion is the coefficient of the third term is 15.

correct choice is B

answer: do we write it

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2