the arithmetic mean of seven numbers which are in arithmetic progression is 100 . Find the largest number in the progression if the smallest number is 10.
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the arithmetic formula for 1st and last term is
100=7(a+l)/2 where a & l are 1st and last term respectively.
therefore the answer "l" is 130/7
100=7(a+l)/2 where a & l are 1st and last term respectively.
therefore the answer "l" is 130/7
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thankyou but the answer is 190
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