Amember of a book club wishes to purchase two books from a selection of eight books recommended for a certain month. in how many ways can she choose them?

She can chose 2 books from 8 books in 28 different way.

Step-by-step explanation:

In the given scenario the member has to chose 2 books from a group of 8 books. The order of choosing books does not matter. For example if the books are A,B,C,D,E,F,G and H, and the member picks books A and B or books B and A, she is picking up the same books. This means order of selection does not matter here, so this is a problem of combinations.

We have to form combination of 8 books taken 2 at a time i.e. 8C2

The general formula of combination is:

Using the values of n=8 and r=2, we get:

This means, she can chose 2 books from 8 books in 28 different ways.

step-by-step explanation:

(s)he  is right it would be 5.5% because it is smaller than 15.5% or anything smaller than 15.5% in general

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: