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Question
In which of the following situations, do the lists of numbers involved form an AP? Give reasons for your answers.
The fee charged from a student every month by a school for the whole session, when the monthly fee is Rs 400.
Solution
The fee charged from a student every month by a school for the whole session is
400, 400, 400, 400,...
Which form an AP, with common difference (d) = 400 – 400 = 0
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