ArithmeticSix bells commence tolling together and toll at intervals of 2,4,6,8,10 and 12 seconds respectively.  In 30 minutes, how many times do they toll together ?

Six bells commence tolling together and toll at intervals of 2,4,6,8,10 and 12 seconds respectively.  In 30 minutes, how many times do they toll together ?

  1. A

    4

  2. B

    10

  3. C

    15

  4. D

    16

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