4) Let A = {1, 2, 3} and B = {a, b}. Thena. Find AxB.b. Find BxA.с. Is AxB %3D BХА ?d. Find n(AxB) and n (BxA).е. Is n(AxB) 3 n( ВхА) ?

Answered: Image /qna-images/answer/b8d39165-debd-4e39-ad13-e282f1601e5f.jpg

Answered: 4) Let A = {1, 2, 3} and B = {a, b}.…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section: Chapter Questions

Problem 32RE: In a group of 20 musicians, 12 play piano, 7 play trumpet, and 2 play both piano and trumpet. How...

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Similar questions

A commuter must travel from Ajax to Barrie and back every day. Four roads join the two cities. The commuter likes to vary the trip as much as posible, so she alwaysleaves and returns by different roads. In how many different ways can she make the round-trip?
A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in the front and 3 in the back a. How many arrangements are possible with no restrictions? b. How many arrangements are possible if the parents must sit in the front? C. How many arrangements are possible if the parents must be next to each other?
Over the past year, John has purchased 30 books. a In how many ways can he pick four of these books and arrange them, in order, on his nightstand bookshelf? b In how many ways can he choose four of these books to take with him on his vacation at the shore?
Over the past year, John has purchased 30 books. In how many ways can he pick four of these books and arrange them, in order, on his nightstand bookshelf? In how many ways can he choose four of these books to take with him on his vacation at the shore?
In a group of 20 musicians, 12 play piano, 7 play trumpet, and 2 play both piano and trumpet. How many musicians play either piano or trumpet?

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4) Let A = {1, 2, 3} and B = {a, b}. Then a. Find AxB. b. Find BxA. с. Is AxB %3D BХА ? d. Find n(AxB) and n (BxA). е. Is n(AxB) 3 n( ВхА) ?