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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।

MathematicsWhat is the value of (S_{42}+S_{84}+S_{126})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsAt which (n) will (S_n) first become greater than (15000)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsIf (S_{m+3}-S_m=282), what is the value of (m)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsA staircase figure has (3160) blocks in total, and the (r)th row has (r) blocks. What is the number of rows?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsFor which (n) will (S_n-S_{n-5}=535)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsAt which (n) will (S_n) first become greater than (12000)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsHow much greater is the sum of the first (120) natural numbers than the sum of the first (60) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsWhat is the value of (S_{88}+S_{90}-2S_{89})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsWhat will be the value of (S_{150}-S_{140})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsWhat is the sum of the natural numbers from 61 to 125?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Hard MathematicsIf the sum of the first (n) natural numbers is (4950), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsIf S_y = 7381, what is the value of S_(y+2)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is 2 times the difference between S_72 and S_36?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf S_n = 9180, what is the value of n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the value of S_250 − S_240?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf S_(n+2) − S_(n−2) = 286, what is the value of n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsFind the value of (S_{29}+S_{58}+S_{87}).Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf (S_n=7875), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhich sum is obtained by adding (116+117+118+119+120) to (S_{115})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf \(S_n-S_{n-1}=126\) and \(S_m=1953\), what is \(n-m\), where \(S_k=1+2+\cdots+k\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium