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The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
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ANS:100 &10,100
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The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
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so the sum of 9 is 72 and the sum of 18 = 72+71=143 (9/2)(2a + 8d) = 72 ---> 2a+8d=16 (18/2)(2a +
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Simply stating the answer serves the student no purpose.
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Thanks we'll calculated
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