cards each marked with one of the numbers 4, 5, 6, .........20 are placed in a box and mixed . thoroughly, one card is drawn at random from the box . what is the probability of getting an even prime number
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Total no. of cards in the box = 17
The only even prime no. is 2
2 is not among the no.s in the box
Thus, the no. of even prime no.s in the box = 0
P (E) = No. of events favourable to E / Total no. of events
P (an even prime no.) = 0 / 17
= 0
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