Five bells toll together at the intervals of 5, 6, 8, 12 and 20 seconds respectively. Find the numbe

Five bells toll together at the intervals of 5, 6, 8, 12 and 20 seconds respectively. Find the number of times they toll together in one hour’s time (Inclusive of the toll at the beginning)

  1. 120
  2. 31
  3. 30
  4. 5
  5. None of These

    Ans: 2

    Solution: Time after which all the bells tol together is the LCM of 5, 6, 8, 12 and 20.
    i.e., 120 seconds = 20   minutes
    The number of times they toll together in one hour =  60/2  = 30 + 1 (beginning tone)
    So, the answer is 31

  6. READ  The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:

    Leave a Reply

    Your email address will not be published. Required fields are marked *

    8 + 5 =


    © Copyright 2017 - All Rights Reserved | DesignzRush (OPC) Pvt. Ltd.
    Complete Solution for Banking Exams in India
    Inline
    Inline