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Explicit Rule

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

MathematicsWhat is the nth term of the sequence 4, −7, 10, −13, 16, …?Class 9Sequences and Progressionsnth termMedium MathematicsIf aₙ = (−1)ⁿ(n + 2), what is the value of a₆ + a₇?Class 9Sequences and ProgressionsExplicit or general ruleMedium MathematicsIf aₙ = 11n − 15, what is a₂ᵣ₋₁?Class 9Sequences and Progressionsnth termMedium MathematicsWhat is the nth term of the sequence 10, 18, 34, 66, 130, …?Class 9Sequences and Progressionsnth termHard MathematicsIn an arithmetic sequence, a₇ = 38 and the common difference is 6. What is its nth term?Class 9Sequences and Progressionsnth termHard MathematicsWhat is the nth term of the sequence 3⁄2, 5⁄3, 7⁄4, 9⁄5, …?Class 9Sequences and Progressionsnth termHard MathematicsWhich is the nth term of the sequence 4, 10, 18, 28, 40, …?Class 9Sequences and Progressionsnth termHard MathematicsIf aₙ = (n² + 1)⁄n, what is the value of a₄?Class 9Sequences and Progressionsnth termMedium MathematicsWhich is the nth term of the sequence −1, 4, −9, 16, −25, …?Class 9Sequences and Progressionsnth termHard MathematicsWhat is the nth term of the sequence (1/2, 2/3, 3/4, 4/5, …)?Class 9Sequences and Progressionsnth termMedium MathematicsIf aₙ = 3n² − 2n + 1, what is the value of a₈ − a₅?Class 9Sequences and Progressionsnth termMedium MathematicsWhich is the nth term of the sequence 4, 6, 10, 18, 34, …?Class 9Sequences and ProgressionsExplicit or general ruleMedium MathematicsWhat is the nth term of the sequence 7, 15, 31, 63, 127, …?Class 9Sequences and ProgressionsExplicit or general ruleHard MathematicsWhich is the nth term of the sequence 5, 12, 21, 32, 45, …?Class 9Sequences and ProgressionsExplicit or general ruleHard MathematicsWhat is the nth term of the sequence 1, 3, 7, 15, 31, …?Class 9Sequences and ProgressionsExplicit or general ruleMedium MathematicsWhat is the nth term of the sequence 8, 27, 64, 125, …?Class 9Sequences and Progressionsnth termMedium MathematicsIf aₙ = (−1)ⁿ(2n + 3), what is a₆?Class 9Sequences and Progressionsnth termEasy MathematicsA sequence has rule aₙ = n² + n + 2. What is a₅ + a₆?Class 9Sequences and Progressionsnth termEasy MathematicsWhat is the nth term of the sequence (2, 6, 12, 20, ...)?Class 9Sequences and ProgressionsExplicit or general ruleMedium MathematicsIf aₙ = 4 × 5ⁿ⁻¹, what is the value of a₄ + a₅?Class 9Sequences and ProgressionsGeometric ProgressionHard