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Recent questions tagged sequence
+3
votes
1
answer
Insert 4 H.M between 2/3 and 2/13.
asked
Apr 6, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+3
votes
1
answer
If ai > 0 ∀ i ∈ N such that ∏ ai i ∈ [i = 1, n] = 1 then prove that (1 + a1) (1 + a2) (1 + a3) ........(1 + an) ≥ 2^n
asked
Mar 28, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+3
votes
1
answer
Find the value of the expression ∑ i∈ [i = 1, n] ∑ j∈ [j = 1, i] ∑ k ∈ [k = 1, j]
asked
Mar 27, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+2
votes
1
answer
The sum of 20 terms of the series 12 + 16 + 24 + 40 + ... is _______
asked
Mar 26, 2019
in
JEE
by
kratos
class-11
jee
class-10
sequence
jee mains
sequences and series
+3
votes
1
answer
If t54 of an A.P. is – 61 and t4 = 64, find t10.
asked
Mar 11, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+1
vote
1
answer
Find the sum of all natural numbers divisible by 5, but less than 100.
asked
Mar 4, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+2
votes
1
answer
Find the sum to n-terms of the series 1.2 + 2.3 + 3.4 + ............
asked
Feb 26, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+1
vote
1
answer
Insert 4 G.M.* between 2 and 486.
asked
Feb 24, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+3
votes
1
answer
Between two numbers whose sum is 13/6, an even number of A.M.* is inserted, the sum of these means exceeds their number by unity.
asked
Feb 23, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+3
votes
1
answer
If the ratio of the sums of first n term of two A.P'* is (7n + 1) : (4n + 27), find the ratio of their mth terms.
asked
Feb 20, 2019
in
JEE
by
kratos
cbse
progression
arithmetic progression
jee
class-10
sequence
jee mains
+1
vote
1
answer
The n^th term of the sequence 5 + 55 + 555 + . . . . . . is (A) 5 × 10^n–1
asked
Feb 15, 2019
in
Class 11
by
kratos
geometric progressions
class-11
sequence
progression and series
sequences and series
+2
votes
1
answer
The sum of first n terms of an AP is given by Sn = 2n^2 + 3n. Find the sixteenth term of the AP.
asked
Feb 3, 2019
in
JEE
by
kratos
cbse
progression
arithmetic progression
jee
class-11
class-10
sequence
jee mains
sequences and series
+1
vote
1
answer
If pth, q^th and r^th term of a A.P. are three consecutive terms of G.P. find common ratio of the G.P.
asked
Jan 26, 2019
in
Class 11
by
kratos
class-11
arithmetic progression
class-10
sequence
progression and series
sequences and series
+3
votes
1
answer
Show that the sum of (m + n)^th and (m – n)^th terms of an A.P. is equal to twice the m^th term.
asked
Jan 12, 2019
in
Class 11
by
kratos
binomial theorem
class-11
sequences and series
sequence
+2
votes
1
answer
If x/(b-c) = y/(c-a) = z/(a-b), Prove that: ax+by+cz = 0
asked
Jan 11, 2019
in
Class 11
by
kratos
ratio and proportion
class-8
class-11
class-9
class-10
icse
sequence
progression and series
+1
vote
1
answer
Find the general term and sum of n terms of the series 9, 16, 29, 54, 103
asked
Jan 4, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+3
votes
1
answer
Evaluate 1 + (1 + b) r + (1 + b + b^2) r^2 + ......... to infinite terms for |br| < 1.
asked
Jan 1, 2019
in
JEE
by
kratos
progression
jee
sequence
jee mains
+1
vote
1
answer
If (m+1)th term of an A.P is twice the (n+1)^th term, Prove that (3m+1)^th term is twice the (m+n+1)^th term.
asked
Dec 29, 2018
in
Class 11
by
kratos
arithmetic progression
class-11
numbers and sequences
class-10
sequence
progression and series
+1
vote
1
answer
Greatest positive term of a H.P. whose first two terms are 2/5 and 12/23 is–
asked
Dec 26, 2018
in
JEE
by
kratos
progression
jee
sequence
jee mains
wbjee
binomial theorem
alternating current
class-12
+2
votes
1
answer
In an A.P.,if p^th term is 1/q and q^th term is 1/p, prove that the sum of first pq terms is 1/2(pq + 1), where p ≠ q.
asked
Dec 25, 2018
in
Class 11
by
kratos
class-11
sequences and series
sequence
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