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COMEDK2024MathematicsProbability

A six digit number is formed by using 1,2,3,4 , 5,6 with no repetition. Then the probability that number 1 and 3 always come together.

Options

  1. A1 2
  2. B1 3
  3. C2 3
  4. D1 4

Correct answer

B. 1 3

Step-by-step solution

Total number formed using this number =6 ! Total number formed when 1,3 are together =5! 2 So, required probability = 2 5! 6! = 2 5! 6 5! = 1 3

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