Question: a) A bookcase shelf has 2 Calculus textbooks, 5 Statistics textbooks, 3 Physics textbooks, and 5 LinearAlgebra textbooks. textbooks. what is number of waysna student

a) A bookcase shelf has 2 Calculus textbooks, 5 Statistics textbooks, 3 Physics textbooks, and 5 LinearAlgebra textbooks. textbooks. what is number of waysna student can choose one ofeach type of textbooks.

b) There are 3 subway lines from city T to city Y and 8 subway lines from city Y to city R. What is the number of ways that a person can have a round-trip fromTtoRviaYwithoutusing each subway line more than once

c)There are 3 subway lines from city T to city Q and 8 subway lines from city Q to city R. What is the number of ways that a person can have a round-trip fromTtoRviaQ

d)There are 3 subway lines from city T to city Q and 8 subway lines from city Q to city R. What is the number of lines that a person can travel fromTtoRviaQ

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