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October 1, 2014

October 1, 2014

Posted by **Liz** on Sunday, December 5, 2010 at 11:44pm.

A: the red die shows 5.

B: the numbers add to 4.

C: at least one of the numbers is 3.

D: the numbers do not add to 10.

Express the event "The numbers do not add to 4." in symbols.

1

B D D' B' B' ∪ D

How many elements does it contain?

2

- math -
**MathMate**, Monday, December 6, 2010 at 9:23amB : the numbers add to 4.

D : the numbers do not add to 10

D' : is the complement of D, i.e.

the numbers add to 10

B' : is the complement of B

______________________

B' ∪ D : is the complement of B*or*D

= the numbers do not add up to four*or*the numbers do not add to 10

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