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KVPY SX SB Exam 2012 Question Paper

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Question : 15

Total: 120

Let Sn=

denote the sum of the first n positive integers. The numbers S1,S2,S2,...,S99 are written on 99 cards. The probability of drawing a card with an even number written on it is

1
2
49
100
49
99
48
99

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