5.Francis wants to buy ten different books, but he only has money to buy four. How many different ways can Francis make his selection of four books?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
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5.

1. 7!
2. P=
3. C4
4. Electronic lottery numbers are from 1 to 42. To win the prize there must be 6
numbers in which any of the 42 numbers are combined. How many possible
combinations can be made?
5.Francis wants to buy ten different books, but he only has money to buy four. How
many different ways can Francis make his selection of four books?
Transcribed Image Text:1. 7! 2. P= 3. C4 4. Electronic lottery numbers are from 1 to 42. To win the prize there must be 6 numbers in which any of the 42 numbers are combined. How many possible combinations can be made? 5.Francis wants to buy ten different books, but he only has money to buy four. How many different ways can Francis make his selection of four books?
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