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jee king king Grade: 12
        

A forecast is to be made of the results of 5 cricket matches which can be a win, a draw , or a loss. Find the no of forecasts containing 0,1,2,3,4,5 errors respectively.

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear jee king


for each match we have 3 possibbilities 1 is for true forecast and 2 for wromg forecast.


0 error


all forecast must be true =1*1*1*1*1=1


1 error


total ways =5C1 *2*1*1*1*1 =10


2 error


total ways =5C2 *2*2*1*1*1 =40


3 error


total ways =5C3 *2*2*2*1*1 =80


4 error


total ways =5C4 *2*2*2*2*1 =80


5 error


total ways =5C5 *2*2*2*2*2 =32





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Badiuddin

7 years ago
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