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homework problem I-C 8.21

 
 
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Re: homework problem I-C 8.21
by David Reynoso - Monday, April 27, 2020, 8:21 PM
 

This is similar to Example 8.1

The only difference is that you will make a stop at C. Note C is in between two blocks

Try to find first the number of ways to go from A to C. Then the number of ways to go from C to B. Finally, use the two to find all the ways to go from A to B stopping at C.