the algebra of an arithmetic progression is 3n+ 1 how could we say that the squares of the terms of the sequence are in that sequence itself by looking the algebra. ( AP-4,7,10)
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If we add 90 in the smallest two digit number then which number do we get
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The shape of graph between 1//u and 1//v in case of a convex lens is Fig. In case of a convex lens, u is negative, v is positive. Also 1v-1u=1f= constant.
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