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Class 9 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsIn a parking arrangement, the \(r\)th row has \(5r\) vehicles. How many vehicles are there in 42 rows?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsAt which (n) will (S_n) first become greater than (20000)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf \(S_n=3240\), what is the value of \(S_{n+8}-S_n\), where \(S_k=1+2+\cdots+k\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsIf \(S_n-S_{n-6}=621\), where \(S_k=1+2+\cdots+k\), what is the value of \(n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsWhat is the value of (S_{70}+S_{71}-S_{69})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is (12.5%) of the sum of the first (96) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsThe value of \(S_n-S_{n-1}+S_{n-4}-S_{n-5}\) is 150. What is \(n\), where \(S_k=1+2+\cdots+k\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsIf (S_n=5460), what will be the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the value of \(S_{100}-2S_{50}\), where \(S_n=1+2+\cdots+n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsFind the value of (S_{64}+S_{84}-S_{74}).Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf \(S_n\) denotes the sum of the first \(n\) natural numbers, which of the following relations is always true?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the value of (S_{35}+S_{55}+S_{75})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsAt which (n) will (S_n) first become greater than (10000)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsA staircase figure has (2211) tiles in total, and the (r)th row has (r) tiles. What is the number of rows?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsFor which value of \(n\) will \(S_n-S_{n-4}=282\), where \(S_n=1+2+\cdots+n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsWhat is the ratio of (S_{72}) to (S_{24})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsAt which (n) will (S_n) first become greater than (7000)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the value of (S_{75}+S_{77}-2S_{76})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat will be the value of (S_{120}-S_{110})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the sum of natural numbers from (44) to (97)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard