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Algebraic Substitution

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

MathematicsIf \(a_n=\frac{3n+1}{2}\), what is \(a_7\)?Class 9Sequences and Progressionsnth termLevel 56Medium MathematicsIf (a_n=2n+9), what is (n) for (a_n=35)?Class 9Sequences and Progressionsnth termLevel 56Medium MathematicsIf \(a_n=\frac{n(n+1)}{2}\), what is \(a_8\)?Class 9Sequences and Progressionsnth termLevel 56Medium MathematicsIf \(a_n=7\cdot2^{n-1}\), what is the value of \(a_4+a_5\)?Class 9Sequences and ProgressionsGeometric ProgressionLevel 55Medium MathematicsIf (a_n=63-5n), what is the value of (a_4+a_9)?Class 9Sequences and ProgressionsArithmetic ProgressionLevel 52Expert MathematicsIf (a_n=5n+3), what is the value of (a_2+a_4)?Class 9Sequences and ProgressionsArithmetic ProgressionLevel 50Medium MathematicsIf (a_n=200-12n), what is the value of (a_9)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 49Expert MathematicsIf (a_n=2n^2+3), what is the value of (a_3+a_4)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 49Hard MathematicsIf (a_n=n^2+2n), what is the value of (a_4)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 51Easy MathematicsIf (b_n=3b_{n-1}+2) and (b_3=44), what is the value of (b_1)?Class 9Sequences and ProgressionsRecursive ruleLevel 46Expert MathematicsIf (t_1=x), (t_n=2t_{n-1}+3), and (t_4=61), what is the value of (x)?Class 9Sequences and ProgressionsRecursive ruleLevel 46Expert MathematicsIf (b_n=2b_{n-1}+n) and (b_3=19), what is the value of (b_1)?Class 9Sequences and ProgressionsRecursive ruleLevel 45Expert MathematicsIf a₁ = 200 and aₙ₊₁ = aₙ − n(n + 4) − 2, what is a₄?Class 9Sequences and ProgressionsRecursive ruleLevel 47Hard MathematicsIf (a_n=3n^2-2n+5), what will be the value of (a_{12}+a_{13})?Class 9Sequences and ProgressionsSequencesLevel 43Expert MathematicsIf \(a_n=\frac{n^2+n}{2}\), what will be the value of \(a_{18}\)?Class 9Sequences and ProgressionsSequencesLevel 43Expert MathematicsIf \(a_n=\frac{n^2+1}{n}\), what will be the value of \(a_5\)?Class 9Sequences and ProgressionsSequencesLevel 42Expert MathematicsIf (a_n=n!+n), what will be the value of (a_5)?Class 9Sequences and ProgressionsSequencesLevel 42Expert MathematicsIf a_n = n(n + 2), what will be the value of a_11 − a_8?Class 9Sequences and Progressionsnth termLevel 41Medium MathematicsIn the sequence (3,6,11,18,27,\ldots), (a_n=n^2+2). What is (a_9)?Class 9Sequences and ProgressionsSequencesLevel 44Hard MathematicsIf (c=-18) and (m-c=31) in (y=mx+c), what is the slope?Class 9Introduction to PolynomialsSlope and y-interceptLevel 40Expert