Learn Maths Sequence and Series, Class 11 Maths Sequence and Series Exercise, Free Online Sequence and Series Lessons

Class 11 Maths Study Material

An Educational platform for Preparation and Practice Class 11. Kidsfront provide unique pattern of learning Maths with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Maths for Class 11. This study material help Class 11, Maths students in learning every aspect of Sequence and Series. Students can understand Sequence and Series concept easily and consolidate their learning by doing Online Practice Tests on Maths,Sequence and Series chapter repeatedly till they excel in Class 11, Sequence and Series. Free ONLINE PRACTICE TESTS on Class 11, Sequence and Series comprise of Hundreds of Questions on Sequence and Series, prepared by the highly professionals team. Every repeat test of Sequence and Series will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Sequence and Series. Attempt ONLINE TEST on Class 11,Maths,Sequence and Series in Academics section after completing this Sequence and Series Question Answer Exercise.

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Sequence and Series

Next two terms of sequence 1,3,7,15,31,… are

a) 225325
b) 25325
c) 241545
d) None of this

✔Answer

Correct Answer Is : None of this

Solution Is :

General term of a G.P. is

a) Ar^n-1
b) Nr^a-1
c) An^r-1
d) Ar^n-2

✔Answer

Correct Answer Is : Ar^n-1

Solution Is :

The numbers whose arithmetic mean is 68 and geometric mean is 32 are:

a) 8 & 128
b) 6 & 128
c) 8 & 124
d) 5 & 125

✔Answer

Correct Answer Is : 8 & 128

Solution Is :

Sum of squares of the first n natural numbers is

a) [n(n+1)(2n+1)]/6
b) [n(n+1)(2n+1)]/4
c) [n(2n+1)(2n+1)]/6
d) [n(n^2+1)(2n+1)]/6

✔Answer

Correct Answer Is : [n(n+1)(2n+1)]/6

Solution Is :

What is the sum of all two digit odd positive integers?

a) 2475
b) 3256
c) 2015
d) 2021

✔Answer

Correct Answer Is : 2475

Solution Is :

The arithmetic mean A of any two numbers ‘a’ and ‘b’ is given by

a) (a+b)
b) (a+b)/3
c) (a+b)/2
d) None of this

✔Answer

Correct Answer Is : (a+b)/2

Solution Is :

If A, G, H are arithmetic, geometric and harmonic means between a and b respectively, then A,G,H are in

a) GP
b) HP
c) AP
d) SP

✔Answer

Correct Answer Is : GP

Solution Is :

If the number of terms of a G.P. is 3, with the common ratio r, then the selection of terms can be

a) A/r,a,ar
b) R/a,a,ar
c) A/r,r,ar
d) None of this

✔Answer

Correct Answer Is : A/r,a,ar

Solution Is :

If the number of terms are six with common difference `2d`, then the terms can be taken as

a) A-4d,a-3d,a-d,a+d,a+4d,a+5d
b) A-5d,a-3d,a-d,a+d,a+3d,a+5d
c) A-5d,a-3d,d-a,a+d,a+3d,a+5d
d) A-4d,a-2d,a-d,a+d,a+2d,a+4d

✔Answer

Correct Answer Is : A-5d,a-3d,a-d,a+d,a+3d,a+5d

Solution Is :

21 + 22 +23 +….+2ⁿ=

a) 2(2ⁿ- 2)
b) 2(2ⁿ- 4)
c) 2(2ⁿ- 7)
d) 2(2ⁿ- 1)

✔Answer

Correct Answer Is : 2(2ⁿ- 1)

Solution Is :

❑Permutations and Combinations
❑Sets and their representations
❑statistics
❑Mathematical Induction
❑mathematical reasoning
❑Binomial Theorem
❑Calculus
❑Three Dimensional Geometry
❑Conic Sections
❑Straight Lines
❑Sequence and Series
❑Linear Inequalities
❑Complex numbers and Quadratic equations
❑Relations and functions
❑Trigonometric function
❑Probability

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Class 11 Maths Study Material

Sequence and Series

Next two terms of sequence 1,3,7,15,31,… are

Correct Answer Is : None of this

Solution Is :

General term of a G.P. is

Correct Answer Is : Arn-1

Solution Is :

The numbers whose arithmetic mean is 68 and geometric mean is 32 are:

Correct Answer Is : 8 & 128

Solution Is :

Sum of squares of the first n natural numbers is

Correct Answer Is : [n(n+1)(2n+1)]/6

Solution Is :

What is the sum of all two digit odd positive integers?

Correct Answer Is : 2475

Solution Is :

The arithmetic mean A of any two numbers ‘a’ and ‘b’ is given by

Correct Answer Is : (a+b)/2

Solution Is :

If A, G, H are arithmetic, geometric and harmonic means between a and b respectively, then A,G,H are in

Correct Answer Is : GP

Solution Is :

If the number of terms of a G.P. is 3, with the common ratio r, then the selection of terms can be

Correct Answer Is : A/r,a,ar

Solution Is :

If the number of terms are six with common difference `2d`, then the terms can be taken as

Correct Answer Is : A-5d,a-3d,a-d,a+d,a+3d,a+5d

Solution Is :

21 + 22 +23 +….+2n=

Correct Answer Is : 2(2n- 1)

Solution Is :

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Correct Answer Is : Ar^n-1

21 + 22 +23 +….+2ⁿ=

Correct Answer Is : 2(2ⁿ- 1)