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Question

Six trains run from Bangalore to Chennai every week. The train numbers are 151, 152, 153, 154, 155 & 156. Train No: 151 runs on all days except Monday and Wednesday. Train no: 152 runs on all days except Tuesday and Thursday. Train no: 153 runs on all the days on which 152 doesn’t run. Train no: 154 runs along with 152 except Monday and Saturday. Train no: 155 runs on all the days on which 154 doesn’t run except Tuesday and Thursday. Train no: 156 runs alternately the whole week starting from Monday. If a person has to go to Chennai two days a week, which two days should he/she choose to have highest frequency of trains on those days?

A
Monday and Wednesday
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B
Friday and Sunday
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C
Tuesday and Saturday
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D
Thursday and Sunday
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Solution

The correct option is A Friday and Sunday
The train time table is as follows:
Days of the weekTrains running on the dayFrequency of trainsMonday152,155,1563Tuesday151,1532Wednesday152,154,1563Thursday151,1532Friday151,152,154,1564Saturday151,152,1553Sunday151,152,154,1564
Clearly, from the table, we can conclude that the best two days for the journey will be Friday and Sunday.

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