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Numerical Ability
Probability
A car manufacturer produces only red and blue models which come out of the final testing area at random.
What are the odds that five consecutive cars of same color will come through the test area at any one time?
a)1 in 16 b)1 in 125 c)1 in 32 d)1 in 25
Read Solution (Total 2)
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- Prob of red = 1/2
Prob of blue = 1/2
Prob of 5consecutive colors is (1/2)^5
But there are two cases, cars are either all red or all blue so
Ans will be 2*(1/32) ie 1 in 16 - 9 years agoHelpfull: Yes(14) No(1)
- P(of 5 cars of same color)= P(5 red cars)+ P(5 blue cars)
= (1/2)^5 + (1/2)^5
= 1/16 - 9 years agoHelpfull: Yes(7) No(0)
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