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प्रश्न
A bag contains three green marbles, four blue marbles, and two orange marbles, If a marble is picked at random, then the probability that it is not an orange marble is
पर्याय
\[\frac{1}{4}\]
\[\frac{1}{3}\]
\[\frac{4}{9}\]
\[\frac{7}{9}\]
उत्तर
A bag contains 3green, 4blue and 2orange marbles
TO FIND: Probability of not getting an orange marble
Total number of balls 3+4+2=9
Total number of non orange marbles that is green and blue balls is`3+4=7`
`"We know that PROBABILITY" = "Number of favourable event"/"Total number of event"`
Hence probability of getting a non orange ball is `7/9`
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