SOLUTION: How do I insert 5 arithmetic means between 11 and 71?

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Question 429011: How do I insert 5 arithmetic means between 11 and 71?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
a%5B1%5D+=+11, and a%5B7%5D+=+71, n = 7
==> 71 = 11 + 6*d ==> 60 = 6d ==> d = 10
==> the 5 arithmetic means are 21, 31,41,51,61 .