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Solution



Given
In this question, we are given that
    • Deborah and Mike visit the university library at regular intervals every 3 and 4 days respectively.
    • Both of them were in the library on Monday.

To find
We need to determine
    • On what day of the week they will meet in the library again

Approach and Working out
As they are visiting at intervals of 3 and 4 days, they will be meeting again on LCM(3, 4) = 12th day from their first meeting
    • 12th day from Monday = Saturday

Thus, option D is the correct answer.

Correct Answer: Option D
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