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CBSE Class 11-science Answered


Find the number of arithmetic means between 7 and 71 in such a way that 5th mean is 27.

Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer

Let A1, A2, A3, …, An  be n arithmetic means between 7 and 71 and common difference be d.

Total number of terms = n + 2
First term = 7, last term = (n + 2)th term = 71
Thus, there are 15 AM's inserted between 7 and 71.
Answered by | 04 Jun, 2014, 03:23: PM
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