Question

Saina is participating in a race. The probability that she will come first in the race is 0.15. The probability that she will come second in the race is 0.05.The probability that she will come in 3rd is 0.6, and the probability that she will be 4th is 0.2. What is the probability that she will come in 2nd position or better in the race?

Answer 1

sum of all probabilities are 0.15+0.05+0.6+0.2 = 0.28
changes of her probability for her winning is 0.15+0.05 = 0.20
saina's probability is = 0.20/0.28
= 0.7 (approx)
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Yours, Jahnavi