I believe it is the first set... 6 then 13, 15, 18, 22.. that does not seem to match up. An outlier is a point that sits far away from the graph line, or a set of data. Therefore 6 in my opinion is the answer.
Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?
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