Two different numbers are taken from the set {0, I ,2,3,4,5,6,7,8, 9, 10).The probability that their sum and positive difference, are both multiple of 4, is then x equals
Hence both a and b must be even.
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The odd against an event are 5 to 2 and the odds in favour of another disjoint event are 3 to 5. Then the probability that atleast one of the events will happen is
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