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If (S_{4p}=7875), what is the value of (p)?
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Answer and explanation
Correct answer: (31)
(S_{125}=7875), so (4p=125) gives no integer (p). In such questions, check divisibility of the index too.
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What is the correct answer to this question?
(31)
Why is this the correct answer?
(S_{125}=7875), so (4p=125) gives no integer (p). In such questions, check divisibility of the index too.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sum of first n natural numbers.
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