In a lottery, there are 10 prizes and 20 blanks. A ticket is chosen at random. What is the probability of getting a prize?

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Solution

In a lottery, are 10 prizes and 20 blanks
$∴$ Total outcomes =10+20=30
A ticket is chosen at random, then
number of favorable outcomes = 10
Probability of getting a prize = $\frac{n u m b e r o f f a v o r a b l e o u t c o m e s}{t o t a l n u m b e r o f o u t c o m e s} = \frac{10}{30} = \frac{1}{3}$

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In a lottery, there are 10 prizes and 20 blanks. A ticket is chosen at random. What is the probability of getting a prize?

In a lottery, are 10 prizes and 20 blanks ∴ Total outcomes =10+20=30A ticket is chosen at random, then number of favorable outcomes = 10Probability of getting a prize = numberoffavorableoutcomestotalnumberofoutcomes=1030=13