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Question


How many days are between the schedules of Economics and Biology?


Options:
A .   2
B .   4
C .   5
D .   cannot be determined
E .   Rs. 89
Answer: Option A
:
A

There can be two cases for the scheduled day of exams, since on every unique day of the week, there is atleast one exam:


Case I:    Mon       Tue       Thur       Sat       Mon       Wed       Fri


This is not possible as exams end on Saturday.


Case IIMonWedFriSatTueThursSatPhyChemCompBioMathEcoEngOrChemCompPhy/MathBioEngEcoMath/PhyOrEngEconMathBioChemCompPhyOrPhy/MathEcoEngBioMath/PhyChemComp



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