s*******1
发帖数: 135 | 1 A,B,C,D,E, works alone on exactly one day, Monday through Friday.
1. A works only Mon or Wed
2. B will not work Wed or Fri
For 1. we can understand if A works on Mon(Wed), will not work on other days.
How to understand 2.? B could not work on Wed + B could not work on Fri? | a***a
发帖数: 204 | 2 right
days.
【在 s*******1 的大作中提到】
: A,B,C,D,E, works alone on exactly one day, Monday through Friday.
: 1. A works only Mon or Wed
: 2. B will not work Wed or Fri
: For 1. we can understand if A works on Mon(Wed), will not work on other days.
: How to understand 2.? B could not work on Wed + B could not work on Fri?
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