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

MathematicsWhich is the correct formula for the sum of the first n natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsIf the sum of the first n natural numbers is 210, what is n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsIf the sum of the first n natural numbers is 120, what is n?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsWhich is the correct formula for the sum of the first (n) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsWhat is the value of (1+2+3+\cdots+25)?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsWhat is the sum of the first (10) natural numbers?Class 9Sequences and ProgressionsSum of first n natural numbersLevel 62Easy MathematicsIf (a_n=2n^2+7n-4), what will be the value of (a_8-a_3)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhat is the nth term of the sequence \(4,-7,10,-13,16,\ldots\)?Class 9Sequences and Progressionsnth termLevel 57Medium MathematicsIf \(a_n=\frac{3n-2}{2n+1}\), what is the value of \(a_7\)?Class 9Sequences and Progressionsnth termLevel 57Easy MathematicsWhich is the (n)th term of the sequence (12,20,30,42,56,\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsIf (a_n=\frac{n(n+1)}{2}+3), what will be (a_{10})?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsIf (a_n=3n^2-5n+7), what is (a_{n+1}-a_n)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsIf (a_n=4n+(-1)^{n+1}), what will be the value of (a_8)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhat is the (n)th term of the sequence (3,13,33,63,103,\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhich is the (n)th term of the sequence (2,6,14,30,62,\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhat is the (n)th term of the sequence (10,21,36,55,78,\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhich is the (n)th term of the sequence (\frac{5}{6},\frac{9}{11},\frac{13}{16},\frac{17}{21},\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsIn which sequence is each term obtained by adding the same fixed number to the immediately preceding term?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsWhat is the (n)th term of the sequence (6,20,42,72,110,\ldots)?Class 9Sequences and Progressionsnth termLevel 57Expert MathematicsIf (a_n=n^3), what is the formula for (a_n-a_{n-1})?Class 9Sequences and Progressionsnth termLevel 57Expert