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Mathematics

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

MathematicsWhat is the sum of \(121+122+123+\cdots+160\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium MathematicsIf (S_{2k+1}=1770), what will be the value of (k)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsFind the value of (S_{140}-S_{130}+S_{10}).Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the sum of the first (175) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard 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 MathematicsIf \(S_u=1431\) and \(S_v=3321\), what is the value of \(u+v\), where \(S_k=1+2+\cdots+k\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium 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 MathematicsOn a stage, the rth row has 4r lamps. How many lamps will there be in 35 rows?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium 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 MathematicsIf (S_{5p}=5050), what is the value of (p)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the sum of the first (108) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is obtained by subtracting the sum of the first (125) natural numbers from the sum of the first (150) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf (S_{m+2}-S_m=151), what is the value of (m)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the sum of (58+59+60+\cdots+112)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf (S_a=2485) and (S_b=3570), what will be the value of (b-a)?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 MathematicsHow much greater is the sum of the first (90) natural numbers than the sum of the first (45) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsIf (S_n=1326), what will be the value of (S_{n+7})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard MathematicsWhat is the sum of the first (83) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard