Mathematics
Sequences
अनुक्रम
In this Class 9 Mathematics topic from Sequences and Progressions, students learn how numbers or objects are arranged in a definite order and how to identify the rule connecting successive terms. They practise finding missing terms, writing a sequence from a given pattern, and expressing its general term when the relationship is clear. The topic develops pattern recognition, logical reasoning, and accuracy, while preparing students to understand progressions and solve sequence-based problems in later mathematics.
Practice questions
What is the next term in (5,17,53,161,\ldots) if the rule is triple the previous term and add (2)?What is the next term in (160,79,38.5,18.25,\ldots) if the rule is divide the previous term by (2) and subtract (1)?What is the next term in (10,18,34,58,90,\ldots)?What will be the next term in (360,345,315,270,210,\ldots)?What is the next term of (5,10,30,120,\ldots)?What is the ratio of the (3)rd terms of (7,42,252,\ldots) and (5,30,180,\ldots)?How many first terms of (12,21,30,39,\ldots) have sum (150)?In (14,25,36,\ldots), which term comes just before (91)?In (768,384,192,96,\ldots), which term comes just before (24)?Which statement is correct for the (n)th term of (19,27,35,\ldots)?Which is the correct rule for the (n)th term of (156,144,132,\ldots)?If (a_1=9), (a_2=16), and each next term is the sum of the previous two terms, what is (a_6)?If (a_n=5000) in the sequence (8,40,200,1000,\ldots), what is (n)?If (a_n=5n^2-4n+1), what is the value of (a_6-a_3)?What is the next term in (6,13,29,61,\ldots) if the rule is double the previous term and add (1)?What will be the next term of \((20,31,46,65,88,\ldots)\)?In the sequence (3,8,15,24,\ldots), the (n)th term is (a_n=n^2+2n). What is the tenth term?The sequence (2,6,12,20,\ldots) has general term (a_n=n(n+1)). Which term is equal to (72)?What is the next term in the sequence (5,11,19,29,41,\ldots)?In the sequence (4,9,18,31,48,\ldots), the differences are (5,9,13,17,\ldots). What is the next term?