Let W be the event that you will use the books Website tonig

Let W be the event that you will use the book\'s Website tonight, let I be the event that your math grade will improve, and let E be the event that you will use the Website every night. Express the given event in symbols.

Either you will use the Website every night, or your math grade will not improve.

a. E\' I\'

b. E I  

c. E\' I\'

d. E I\'

e. E I\'

Solution

Ans: d) As E denotes using website every night and its union with the complementary of improving of grade which is I\' which is the complimentary of I .