The chance of winning the race of Ravi is 7 8 and that of Fenu is 2 9 What is the probability that t...........

Quantitative Aptitude (CDS) Probability

The chance of winning the race of Ravi is 7/8 and that of Fenu is 2/9. What is the probability that the race will be won by Ravi or Fenu?

79/72

18/35

69/75

48/72

Let P(R) be the probability that the race will be won by Ravi and P(F) be the probability that the race will be won by Fenu.

Therefore P(R)=7/8

and P(F)=2/9

Therefore the probability that the race will be won by Ravi or Fenu=P(R)+P(F)

=7/8+2/9

=[63+16]/72

=79/72

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