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Three-persons-A-B-C-are-to-speak-at-a-function-along-with-five-others-If-they-all-speak-in-random-order-the-probqbility-that-A-speaks-before-B-and-B-speaks-before-C-is-




Question Number 99136 by babar last updated on 18/Jun/20
Three persons A, B, C  are to speak at a  function along with five others. If they  all speak in random order, the probqbility  that A speaks before B and B speaks   before C is
$$\mathrm{Three}\:\mathrm{persons}\:{A},\:{B},\:{C}\:\:\mathrm{are}\:\mathrm{to}\:\mathrm{speak}\:\mathrm{at}\:\mathrm{a} \\ $$$$\mathrm{function}\:\mathrm{along}\:\mathrm{with}\:\mathrm{five}\:\mathrm{others}.\:\mathrm{If}\:\mathrm{they} \\ $$$$\mathrm{all}\:\mathrm{speak}\:\mathrm{in}\:\mathrm{random}\:\mathrm{order},\:\mathrm{the}\:\mathrm{probqbility} \\ $$$$\mathrm{that}\:{A}\:\mathrm{speaks}\:\mathrm{before}\:{B}\:\mathrm{and}\:{B}\:\mathrm{speaks}\: \\ $$$$\mathrm{before}\:{C}\:\mathrm{is} \\ $$

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