Answers

2016-03-10T22:54:21+05:30
Total No. Of Outcomes = 25 ---[As any of the 25 cards can be drawn]
Favourable Outcomes =   (2,3,5,7,11,13,17,19,23)--[Remember 1 is                                                                                                             not a Prime No.                                                                                                            Its Universal
                                                                                     Number] 
Probability Of Prime No. = Favourable Outcomes / Total No.Of Outcomes
P(of Getting Prime No.) = 9/25

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2 5 2
2016-03-10T22:58:44+05:30
Probability = 9/25
As No . of Prime Numbers Between 1-25 = 9
And Total no.Of Number Cards = 25
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