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a school is divided into 4 houses,P,Q,R and S.On sports day,the students line up so that a student from P is first in line,then a student from Q then a student from R then a student from S,then a student from P and so on with same order repeating.From what house will the 66th student come?

  • math -

    every 4 days the cycle is complete.
    After 64 days, we're back to the start.

    so, the 66th student will be from Q.

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