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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.

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.

Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

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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