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Home > CCA2 > Chapter 12 > Lesson 12.1.2 > Problem 12-37
12-37.
Three light bulbs are chosen at random from
None of the three are defective.
Use combinations to solve this problem. For a review of combinations, see the Math Notes in Lesson 10.1.1.
. Exactly two are defective.
Use the same method as part (a).