Question

Given 8 different physics books,7 different chemistry books and 5 different mathematics books.How many ways are there to select one book. Please Answer ASAP

Answer 1

Answer:

infinite

Step-by-step explanation:

Answer 2

There are 20 ways to select one book if one book has to be select from 8 different Physics , 7 different chemistry & 5 Different Mathematics

Step-by-step explanation:

8 different physics books,

7 different chemistry books and

5 different mathematics books.

total Different books = 8 + 7 + 5  = 20

Number of Ways to select one book  = ²⁰C₁

= 20!/(19! * 1!)

= 20

There are 20 ways to select one book

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