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①Quetion : A piece of wire of length 246cm is cut into 12 parts whose lengths are in a arithmetic progression.Given sum of lengths of the four shortest parts is 34cm .Find the length of the longest part.
(ANS:37 cm)
②: Given first term of an arithmetic progression is 5 and the sum of the first eight terms equal to the sum of the following four terms find the common difference.(ANS: 2)
③A circle is divided into n sectors.The smallest angle is 12°and the largest sector is 60°.Find n.
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