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Sequences And Progressions

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

MathematicsIf S_(2k+3) = 3240, what is the value of k?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59HardMathematicsFind the value of (S_{180}-S_{170}+S_{20}).Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsWhat is the sum of the first (250) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsWhich number should be added to (S_{95}) to get (S_{105})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsOn a stage, the rth row has 6r lamps. How many lamps will there be in 45 rows?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59MediumMathematicsWhat is the value of S_144 − 2S_72?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59HardMathematicsWhat is the sum of the first (132) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsIf (S_n=5995), what will be the value of (S_{n-8})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsWhat is obtained by subtracting the sum of the first (160) natural numbers from the sum of the first (200) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsIf (S_a=3003) and (S_b=5050), what will be the value of (b-a)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsWhat is the ratio of (S_{90}) to (S_{45})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsIf (S_n=2080), what will be the value of (S_{n+9})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsWhat is the sum of the natural numbers from 61 to 125?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59HardMathematicsWhat is the sum of the first (92) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59ExpertMathematicsIf S_y = 7381, what is the value of S_(y+2)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62HardMathematicsWhat is 2 times the difference between S_72 and S_36?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62HardMathematicsIf S_n = 9180, what is the value of n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62HardMathematicsWhat is the value of S_250 − S_240?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62HardMathematicsIf S_(n+2) − S_(n−2) = 286, what is the value of n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62HardMathematicsThe sum of the first (n) natural numbers is (10878). What is the value of (n-25)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Hard