SOLUTION: the first term of an A.P and the last term is 69.if the sum of all the terms is 511.find the common difference and the number of term?

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Question 1139019: the first term of an A.P and the last term is 69.if the sum of all the terms is 511.find the common difference and the number of term?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
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first term of an A.P and the last term is 69.if the sum of all the terms is 511
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No. This is said wrong.

Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.

Read your post to make sure that you missed one vitally important part.

Fix your error and then re-submit it to the forum.

Do not post it to me personally.

Thanks.