In a university, there are 40 students majoring in math. They need to take at least one of three courses A, B, C. Suppose we know 20 students take course A, and 25 take B, 21 take C, 10 take A and B, 10 take B and C and 10 take A and C. (a) How many math students take all three courses A, B and C? (b) How many math students take courses A and B but not C? (c) How many math students take exactly two courses?
In a university, there are 40 students majoring in math. They need to take at least one of three courses A, B, C. Suppose we know 20 students take course A, and 25 take B, 21 take C, 10 take A and B, 10 take B and C and 10 take A and C. (a) How many math students take all three courses A, B and C? (b) How many math students take courses A and B but not C? (c) How many math students take exactly two courses?
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.CT: Chapter Test
Problem 21CT: How many ways can 4 men and 4 women stand in line if all the women are first?
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In a university, there are 40 students majoring in math. They need to take at least one of three courses A, B, C. Suppose we know 20 students take course A, and 25 take B, 21 take C, 10 take A and B, 10 take B and C and 10 take A and C. (a) How many math students take all three courses A, B and C? (b) How many math students take courses A and B but not C? (c) How many math students take exactly two courses?
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