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Chapter 5 Class 10 Arithmetic Progressions | 5 questions | about 4 minutes

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Question 1 of 5
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Question 1 of 5
The sum of the first ' \(n\) ' terms of an AP is given by the formula \(S_n=\frac{n}{2}[2 a+(n-\) 1) \(d]\). If a training regimen requires you to do 10 push-ups on day 1 and increase by 2 every day, what does \(S_{30}\) calculate?
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Question 2 of 5
Which term of the AP: \(21,42,63,84, \ldots\) is 210 ?
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Question 3 of 5
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In an AP , if \(d=4, n=7, a_n=4\), then \(a\) is
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Question 4 of 5
In an AP if \(a=1, a_n=20\) and \(\mathrm{S}_n=399\), then \(n\) is
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Question 5 of 5
A concert hall has 20 seats in the first row. Each subsequent row has 2 more seats than the row in front of it. The number of seats in each row forms an Arithmetic Progression. What does the "common difference" represent in this real-world scenario?
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