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mathmath333
 one year ago
Counting question
mathmath333
 one year ago
Counting question

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mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1\(\large \color{black}{\begin{align} & \normalsize \text{The number of ways of dividing 20 different balloons }\hspace{.33em}\\~\\ & \normalsize \text{in two groups containing 11 and 9 balloons is ? }\hspace{.33em}\\~\\ \end{align}}\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.4you choose 11 balloons for the first group the other group is automatically determined

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i agree with ganeshie8

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.4Yes, notice, that also equals 20C9 and agrees with our present problem that you could have chosen the balloons for the second group first

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.1answer given is 20C11*9C9

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.420C11 looks correct to me! textbook answer could be wrong, doesn't make sense to m

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.4lol okay i read it as 20C11*20C9 for some reason
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