Question
How many terms are needed in the series , , , so that their sum is 18?
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Text solutionVerified
Let be the first term and be their common difference of the AP.
Then, Sum to terms of an AP
Here, in the given AP,.
So,
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Question Text | How many terms are needed in the series , , , so that their sum is 18? |
Answer Type | Text solution:1 |
Upvotes | 150 |