2 A shopkeeper sells 300 books on third day and 500 books on seventh day after starting business.Every day the shopkeeper increase the sales in equal difference- a On which context the above sequence context is related? how many books did the shopkeeper sell in the first day. c) Find the common difference of the sequence. (d) How many . books are sold on tenth day? And, how many total book are sold in ten days by the
shopkeeper? find it are sold
((Sequence and series))​

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