Four ladies-Aurora, Betsy, Cynthia and Dinah visited Emily on 14 February.
- The time of each visit is as follows:
- Aurora at 8:00
- Betsy at 9:00
- Cynthia at 10:00
- Dinah at 11:00
Each time mentioned may be either in AM or PM.
- Cynthia did not visit Emily between Betsy and Dinah.
- At least one lady visited Emily between Aurora and Betsy.
- Aurora did not visit Emily before both Cynthia and Dinah.
Determine at what time each of the four ladies eventually visited Emily.
By #4 A must have visited in the PM.
Since A must be before any other PM visitor, and there would be no visitor berween A and B if B were in the PM also, so B visited in the AM, as did either C or D (or both).
But, because of #2, C did not visit between B and D, C must have visited in the evening but D did so in the morning.
A at 8 PM
B at 9 AM
C at 10 PM
D at 11 AM
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Posted by Charlie
on 2022-02-08 09:09:44 |
solution
