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Mathematics

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

MathematicsIf a_n = 5n + (−1)^n, what will be the value of a_10 − a_9?Class 9Sequences and ProgressionsExplicit or general ruleLevel 42Medium MathematicsIf a_n = n² + 2n, which is the first term greater than 100?Class 9Sequences and Progressionsnth termLevel 42Medium MathematicsIn the sequence (1, 4, 9, 16, …), what will be the value of a_11 + a_12?Class 9Sequences and Progressionsnth termLevel 42Easy MathematicsIn the sequence (7, 15, 31, 63, 127, ...), each next term is obtained by doubling the previous term and adding 1. What will be the next term?Class 9Sequences and ProgressionsRecursive ruleLevel 42Medium MathematicsIf a_n = n(n + 3), which term is 130?Class 9Sequences and ProgressionsExplicit or general ruleLevel 42Medium MathematicsIn the sequence (4, 6, 9, 14, 21, 32, …), the successive differences are prime numbers (2, 3, 5, 7, 11, …). What will be the next term?Class 9Sequences and ProgressionsSequencesLevel 42Hard MathematicsWhat is the sum of the first 6 terms of the sequence (2, 5, 10, 17, 26, …)?Class 9Sequences and ProgressionsSequencesLevel 41Medium MathematicsIf a_n = 4n² − 1, which term is 575?Class 9Sequences and Progressionsnth termLevel 42Medium MathematicsIf a_n = n³ + n², what will be the value of a_6 − a_4?Class 9Sequences and Progressionsnth termLevel 42Hard MathematicsWhat will be the next term in the sequence (1, 2, 6, 24, 120, …)?Class 9Sequences and ProgressionsExplicit or general ruleLevel 42Medium MathematicsWhat will be the 9th term in the sequence (3, −6, 12, −24, …)?Class 9Sequences and ProgressionsSequencesLevel 41Medium MathematicsIn the sequence 200, 188, 171, x, 122, the differences are -12, -17, -22, -27. What will x be?Class 9Sequences and ProgressionsSequencesLevel 42Hard MathematicsThe sequence (3, 8, 15, 24, …) has general term a_n = n² + 2n. Which term is 168?Class 9Sequences and Progressionsnth termLevel 42Medium MathematicsIf a_n = (-1)^n(n + 1), what will be the value of a_7 + a_8?Class 9Sequences and ProgressionsExplicit or general ruleLevel 42Medium MathematicsIn the sequence (120, 117, 111, 102, 90, ...), the differences are (-3, -6, -9, -12, ...). What will be the next term?Class 9Sequences and ProgressionsSequencesLevel 42Medium MathematicsIf a_n = n^2 + 5n - 2, which term is equal to 148?Class 9Sequences and Progressionsnth termLevel 42Medium MathematicsWhat will be the 10th term in the sequence (1, 4, 2, 8, 3, 16, 4, ...)?Class 9Sequences and ProgressionsSequencesLevel 41Medium MathematicsIf a_n = n(n + 2), what will be the value of a_11 − a_8?Class 9Sequences and Progressionsnth termLevel 41Medium MathematicsWhat will be the 12th term in the sequence (3, 5, 9, 15, 23, ...)?Class 9Sequences and Progressionsnth termLevel 41Hard MathematicsIn the sequence (5, 12, 19, 26, ...), how many terms are greater than 50 and less than 150?Class 9Sequences and ProgressionsArithmetic ProgressionLevel 41Medium