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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-2

  • question_answer
    Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

    A)  1/2                              

    B)  2/5

    C)  8/15                

    D)       9/20

    Correct Answer: D

    Solution :

     Here \[S=(1,2,3,4,5,....19,20).\]              Let E=event of getting a multiple of 3 or 5              =(3,6,9, 12, 15, 18,5, 10,20)               \[P(E)=n(E)/n(S)\]              \[=9/20.\]


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