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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।

MathematicsOn a stage, row 1 has 3 lamps, row 2 has 6 lamps, and row 30 has 90 lamps. If row r has 3r lamps, how many lamps are there in total?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is the value of S₇₀ − 2S₃₅?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsIf (S_{2p}=820), what is the value of (p)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsFind the value of (S_{40}+S_{60}-S_{50}).Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is the sum of the first (96) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsIf (S_n=3240), what will be the value of (S_{n-4})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsSubtract the sum of the first (75) natural numbers from the sum of the first (100) natural numbers.Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsIf S₍ₘ₊₁₎ − Sₘ = 76, what is the value of m?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsIf (S_a=1540) and (S_b=2080), what will be the value of (b-a)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is the ratio of (S_{60}) to (S_{30})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsHow much greater is the sum of the first (40) natural numbers than the sum of the first (20) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsIf (S_n=465), what will be the value of (S_{n+5})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is the value of S₈₅ − S₈₀?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is the sum of the first (64) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard MathematicsWhat is 25% of the sum of the first 56 natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf Sₙ = 1953, what is the value of S₍ₙ₊₂₎?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsWhat is the difference between the sum from (1) to (150) and the sum from (1) to (100)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsFor which positive integers \(n\) is the sum \(S_n\) of the first \(n\) natural numbers exactly divisible by \(n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsHow much less is the sum of the first (99) natural numbers than the sum of the first (100) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_{n+1}-S_{n-2}=150), what will be the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard