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Class 9 Mcq

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 \(S_{100}-2S_{50}\), where \(S_n=1+2+\cdots+n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Medium 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 3 times the difference between S_48 and S_24?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsWhat is the value of S_200 - S_190?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Easy MathematicsWhich sum is obtained by adding 76 + 77 + 78 + 79 + 80 to S_75?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Easy MathematicsIf S_n - S_{n-1} = 84 and S_m = 990, what is n - m?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsIf S_n = 1830, what is the value of S_{n+10} - S_n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsThe value of Sₙ − S₍ₙ₋₁₎ + S₍ₙ₋₂₎ − S₍ₙ₋₃₎ is 100. What is n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Hard 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₍ₘ₊₁₎ − Sₘ = 76, what is the value of m?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 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 MathematicsIf Sₙ − S₍ₙ₋₁₎ = 57, what is the value of Sₙ?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf Sₙ = 1275, what is the value of S₍ₙ₊₃₎?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsFind the value of S₍₂₅₎ + S₍₂₇₎, where Sₙ denotes the sum of the first n natural numbers.Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Medium MathematicsWhat sum is obtained by adding 53 + 54 + 55 to 1 + 2 + ⋯ + 52?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Easy MathematicsIn a triangular decoration, flowers are arranged in rows from 1 to 28. How many flowers are there in total?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Easy MathematicsIn a saving plan, 1 rupee is saved in the 1st week and 49 rupees in the 49th week. If the amount increases by 1 rupee each week, what is the total saving?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Easy