There are 79 students in the Travel Club. They discovered that 30 members have visited country A, 35 have visited country B, 34 have been to country C, 9 have visited countries A and B, 16 have been only to country C, and 17 have been only to country A. Some club members have not been to any of the three foreign countries, and, curiously, an equal number have been to all three countries. (a) How many students have been to all three countries? (b) How many students have been only to country B?
There are 79 students in the Travel Club. They discovered that 30 members have visited country A, 35 have visited country B, 34 have been to country C, 9 have visited countries A and B, 16 have been only to country C, and 17 have been only to country A. Some club members have not been to any of the three foreign countries, and, curiously, an equal number have been to all three countries. (a) How many students have been to all three countries? (b) How many students have been only to country B?
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CT: Chapter Test
Problem 8CT: A board of directors consisting of eight members is to chosen from a pool of 30 candidates. The...
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There are 79 students in the Travel Club. They discovered that
30 members have visited country A, 35 have visited country B, 34 have been to country C, 9 have visited countries A and B, 16
have been only to country C, and 17 have been only to country A. Some club members have not been to any of the three foreign countries, and, curiously, an equal number have been to all three countries.(a) How many students have been to all three countries?
(b) How many students have been only to country B?
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