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Rohan can go from Pune to Mumbai by any one of 4 different buses, 3 different trains or 2 different flights. In how many ways can he make the journey?

Competition practicePermutations & Combinations
  • A9
  • B24
  • C12
  • D6

Step-by-Step Solution

He uses exactly one mode, so the choices are added, not multiplied: . (24 would mean taking a bus AND a train AND a flight.)
Answer: A) 9

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