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Aadita is celebrating her birthday. She ...

Aadita is celebrating her birthday. She invited her friends. She bought a packet of toffees/candies which contains 120 candies. She arranged the candies such that in the first row there are 3 candies, in second there are 5 candies, in third there are 7 candies and so on.

Find the first term and common difference of A.P.

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