Q3 of 66 Page 15

Cards bearing numbers 2, 3, 4, ....., 11 are kept in a bag. The probability of getting a card with a prime number is[CBSE 2012]

Total numbers of elementary events are 10


Let E be the event of getting a prime number


Favourable numbers are: 2, 3, 5, 7, 11


Numbers of favourable outcomes = 5


P (E) = 5/10 =1/2

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