Suppose you choose four books to read from a summer reading list of 12 books. how many different combinations are possible

The number of different combinations that are possible are:

                          495

The method of combination states that:

If we have to choose r items out of a total of n items then the number of ways of doing so is calculated by the formula:

Here we are asked to find:

       The number of combinations possible when we have to choose 4 books out of 12 books.

i.e. we have: n=12 and r=4

Hence, the number of ways is calculated as follows:

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation: