Asked by Anonymous

The sum of the first 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
Answered by PsyDAG
I don't know what "A.P" means.
Answered by Steve
Sure you do. :-)

The question
a) is obviously about an arithmetic progression
b) has already been posted three times!?!?!?!!?
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