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Quadratic Equation

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

MathematicsIf (S_n=13041), what is the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Expert MathematicsIf (S_n-S_{90}=5775), what will be the value of (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Expert MathematicsIf Sₙ = n(n + 1)/2 and Sₙ = 7503, what is the value of n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsThe sum of the first (n) natural numbers is (13695). What is the value of (n-30)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 59Expert MathematicsThe 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 MathematicsThe sum of the first (n) natural numbers is (4656). What is the value of (n-10)?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 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 MathematicsIf (S_n=4950), what will (n) be?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsIf the sum of the first (n) natural numbers is (2211), what is (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsIf the sum of the first (n) natural numbers is (1540), what is (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsIf \(1+2+3+\cdots+n=1035\), what is the value of \(n\)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 61Medium MathematicsIf the sum of the first (n) natural numbers is (325), what will (n) be?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 63Easy MathematicsIf the sum of the first (n) natural numbers is (36), what is (n)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsIf (a_n=n(n+4)), which term is (77)?Class 9Sequences and Progressionsnth termLevel 59Hard MathematicsIf (a_n=2n^2+3n) and (a_n=65), what is the value of (n)?Class 9Sequences and Progressionsnth termLevel 56Expert MathematicsIf aₙ = n(n − 2), which term is 48?Class 9Sequences and Progressionsnth termLevel 58Medium MathematicsIf (a_n=n^2+4n), for which (n) will (a_n=77)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 50Hard MathematicsIf (a_n=n^2+2n), for which (n) will (a_n=80)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 49Hard MathematicsIf (a_n=n^2+n-2) then which term is equal to (70)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 48Medium