Questions
If the letters of the word MATHEMATICS are arranged arbitrarily, the probability that C comes before E, E before H,H before I and I before S is
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Correct option is C
The total numbers of arrangements is 11!2!2!2!=11!8 The number of arrangements in which C, E, H, I, S appear in that order 11C56!2!2!2!=11!8⋅5!∴ Required Probability =11!8⋅5!11!8=1120Similar Questions
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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