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Q: At a Telephone exchange, three phones ring at intervals of 20 sec, 24 sec and 30 seconds. If they ring together at 11 : 25 a.m. When will they next ring together?

    Asked By: gopi marupilla

    Ans:

    After 11.25 am three phones will ring together at 1.25 pm

Q: How to prepare general studies for RRB NTPC exams? Give preparation strategy.

    Asked By: M Sudarshan

    Ans:

    Preparation plans for RRB NTPC exams are available in our RRB section. Please go through that section.