jee_main_2026_28_january_morning - Sequences and Series Topics

Master these core formulas and structures to solve almost any past paper question.

Sample Questions in this Chapter

QUESTION #2 Exponential Series
The value of Σk=1∞(-1)k+1((k(k+1))/(k!)) is:
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QUESTION #17 Arithmetic Progression
The common difference of the A.P.: a₁, a₂, , am is 13 more than the common difference of the A.P.: b₁, b₂, , bₙ. If b₃₁ = -277, b₄₃ = -385 and a₇₈ = 327, then a₁ is equal to
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QUESTION #21 Geometric Progression
In a G.P., if the product of the first three terms is 27 and the set of all possible values for the sum of its first three terms is R - (a, b), then a² + b² is equal to ____.
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Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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