Asked by Ada
The 4th term of an AP is 6 if d sum of d 8th and 9th term is -72 the common difference is
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Answered by
Reiny
Please type your question in proper English.
"d" is the common variable for the difference between consecutive terms of an AP and not as a substitute for "the".
"d" is the common variable for the difference between consecutive terms of an AP and not as a substitute for "the".
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