a panel of 6 judges is being selected from a group of 10 males and 10 females.What is the probability of selecting exactly 3 male?

Respuesta :

10nCr6 over 6nCr3 this should give you the answer

Probability of selecting exactly 3 male is equals to

What is probability?

" Probability is defined as the ration of the number of favourable outcomes to the total number of outcomes."

Formula used

Probability = [tex]\frac{n(S)}{n(T)}[/tex]

[tex]n(S) =[/tex] Number of favourable outcomes

[tex]n(T)=[/tex] Total number of outcomes

According to the question,

Total number of males [tex]=10[/tex]

Total number of females [tex]=10[/tex]

Number of judges for a panel to be selected [tex]=6[/tex]

As per given condition ,

Total number of outcomes [tex]= 20\rm C_{6}[/tex]

Number of selecting exactly 3 males for 6 judges [tex]= 10\rm C_3\times 10\rm C_3[/tex]

Substitute the value in the formula to get the required probability,

Probability of selecting exactly 3 males [tex]= \frac{ 10\rm C_3\times 10\rm C_3}{20\rm C_{6}}[/tex]

                                                                   [tex]= \frac{120}{323}[/tex]

Hence, the probability of selecting exactly 3 males is equals to [tex]\frac{120}{323}[/tex].

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