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Find the number of paths from A to B (Each step can only go up or to the right.)

 

 Jul 9, 2021
 #1
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We  have  the following  set of  moves  (in any order )

 

( R, R,  R,  R  , U , U , U , U)

 

Choose  any 4 of  8 positions to put the U's  in   or any 4 of 8 positions to put the R's  in

 

The  number  of paths =    C (8,4)   =     70

 

cool cool cool

 Jul 9, 2021

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