Countless counted

Probability Level 4

The number of ways in which t e n b a l l s ten~ balls can be selected from an unlimited number of \color \grey{white},\color\green{green},\color \yellow{yellow} and \color \red{red} balls is p p

Find p − 76 p-76


The answer is 210.

Tanishq Varshney by Tanishq Varshney , 23, India

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1 solution

Tanishq Varshney
Apr 13, 2015

x 1 + x 2 + x 3 + x 4 = 10 x_{1}+x_{2}+x_{3}+x_{4}=10

using multinomial

10 + ( 4 − 1 ) C 4 − 1 = 286 ^{10+(4-1)}C_{4-1}=286

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