Asked by omar
50 red cars and 30 white and 20 blue what is the probability of 2 cars from the same colors ?
Answers
Answered by
T.J And the Vibe
The probability would be red because it has the most cars
Answered by
KeeKee
10
Answered by
Reiny
Your question is incomplete.
Are you choosing 2 cars ? It doesn't say.
Assume we are choosing 2 cars and you want the prob that they are both of the same colour.
The could be RR or WW or BB
prob(RR) = C(50,2)/C(100,2) = 1225/4950 = 49/198
prob(WW) = C(30,2)/C(100,2) = 435/4950 = 29/330
prob(BB) = C(20,2)/C(100,2) = 190/4950 = 19/495
sum of those = 37/99
prob of same colour = 37/99
Are you choosing 2 cars ? It doesn't say.
Assume we are choosing 2 cars and you want the prob that they are both of the same colour.
The could be RR or WW or BB
prob(RR) = C(50,2)/C(100,2) = 1225/4950 = 49/198
prob(WW) = C(30,2)/C(100,2) = 435/4950 = 29/330
prob(BB) = C(20,2)/C(100,2) = 190/4950 = 19/495
sum of those = 37/99
prob of same colour = 37/99
Answered by
baba wBABABUFFJDKCKC
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