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If is an A.P. such that then is equal to-
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Text solutionVerified
Here we use the following formula to calculate the sum of first n terms of an AP:
Now
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Question 2
The ratio between the sums of n terms of two arithmetic progressions is (7n + 1): (4n + 27). The ration their 11 th terms is Stuck on the question or explanation?
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Question Text | If is an A.P. such that then is equal to- |
Answer Type | Text solution:1 |
Upvotes | 150 |