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Sum Of Natural Numbers

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

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 MathematicsIf (S_n=4560), what is the value of (S_{n+5}-S_n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n=3655), what will be (S_n-S_{n-4})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsA student added numbers from (1) to (120) and then subtracted the sum from (1) to (80). What will be the result?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_{n+2}-S_n=155), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsWhich condition is necessary and sufficient for a positive integer \(T\) to be the sum of the first \(n\) natural numbers for some positive integer \(n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n-S_{50}=1575), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n=1081), what is the value of (S_{n+4}-S_n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf the sum of the first (n) natural numbers is (S_n), what is (S_{n+1}-S_{n-1}) equal to?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n=5050), what is the value of (S_{n-10})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsHow much is the sum of natural numbers from (101) to (120)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf \(S_n=\frac{n(n+1)}{2}\), what is the value of \(S_{2n}\) when \(n=15\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n=595), what is (S_{n+6}-S_n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n=2485), what is the value of (S_n-S_{n-5})?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf (S_n-S_{n-4}=250), what will be the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsIf \(S_n=\frac{n(n+1)}{2}\) and \(S_n=861\), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 60Hard MathematicsFind the value of S₂₅ + S₂₇, where Sₙ denotes the sum of the first n natural numbers.Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Medium MathematicsIf (S_a=820) and (S_b=1035), what is (b-a)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Medium MathematicsWhat is the sum of (23+24+25+\cdots+34)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Medium MathematicsIn a game, marks from (1) to (20) are scored in the first (20) stages, and (0) marks in the next (5) stages. What is the total score?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Medium