Arthur D. answered 02/19/15
Tutor
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(338)
Forty Year Educator: Classroom, Summer School, Substitute, Tutor
for the first choice, you have 3 cities to choose from
for the second choice, you have 2 cities to choose from
for the third choice, you have 1 city to choose from
3*2*1=6 orders
B=Boston, H=Hartford, NY=New York City
B H NY
B NY H
H B NY
H NY B
NY B H
NY H B