doubt with a certain type of combinations question

Published: 29/05/2017
doubt with a certain type of combinations question
Source: GMATCLUB.COM

mynamegoeson wrote: There will be 4C3 ways in which any three out of A B C D can be picked . there are 2C1 ways in which A can be picked . 4C1 ways in which B can be picked. 1C1 ways in which C can be picked and 1C1 ways in which D can be picked Sent from my iPhone using GMAT Club Forum I am sorry but I do not agree with your explanation. If A is repeated twice, that doesn't mean number of ways o

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