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Ayan
Subject: Maths
, asked on 23/5/18
The sums of n terms of two arithmetic series are in the ratio 2n+3:6n+5,then the ratio of their 13th terms is---
Answer
1
Aritra Roy
Subject: Biology
, asked on 21/5/18
Who was the first mughal king and the first finance minister? Write about them.
Answer
3
Om Prasad
Subject: Maths
, asked on 18/5/18
Please set this question as priority
Thanks for solving it in advance:
Q. If a
1
,a
2
,a
3
,..............a
n
are in harmonic progression, then a
1
a
2
+a
2
a
3
+....+a
n-1
a
n
is equal to.
(a) (n-1)a
1
a
n
(b) na
1
a
n
(c) n(a
1
+a
n
) (d) None of these.
Answer
2
Souvik Das
Subject: Maths
, asked on 15/5/18
Please solve question number 16 of miscellaneous exercise ?
Answer
1
Souvik Das
Subject: Maths
, asked on 11/5/18
Please solve Q.7 of miscellaneous exercise on chapter 9 from class 11ncert book
(Also tell ? represents what ??)
Answer
1
Riddhi Pendse
Subject: Maths
, asked on 27/4/18
Solve this:-
Q What is value of :-
Q.
5
-
2
1
+
4
1
+
4
9
+
4
5
Q.
2014
2
7
-
3
3
×
4028
55
+
12
21
Answer
1
Riddhi Pendse
Subject: Maths
, asked on 26/4/18
Q. What is the value of (a)
(
5
-
2
)
1
+
4
1
+
4
9
+
4
5
(
b
)
2014
2
7
-
3
3
×
4028
55
+
12
21
Answer
1
Tanmay Tanwar
Subject: Maths
, asked on 20/4/18
1. Find the first three terms of the sequence whose
n
t
h
terms are given below:-
1.
a
n
=
3
n
2
n
-
1
2
n
+
1
.
Answer
2
Lavneesh Rajput
Subject: Maths
, asked on 18/4/18
Solve this:
Q.195. The value of the infinite series
1
2
.
3
+
2
2
.
5
+
3
2
.
7
+
4
2
.
9
+
.
.
.
.
.
.
.
.
is
(a)
2
3
(b) 2e
(c)
e
2
(4)
1
2
e
Answer
1
Lavneesh Rajput
Subject: Maths
, asked on 18/4/18
Solve this:
181
.
I
f
x
<
1
t
h
e
n
t
h
e
(
r
+
1
)
t
h
t
e
r
m
t
h
e
e
x
p
a
n
s
i
o
n
o
f
(
1
-
x
)
-
2
i
s
a
r
+
1
x
r
b
r
x
r
-
1
c
r
x
-
r
+
1
d
r
+
1
x
r
-
1
Answer
1
Amitesh Kumar
Subject: Maths
, asked on 14/4/18
Plz fast
Q68. If a
1
, a
2
, a
3
, ...... a
2n
+1
are in A.P. then
a
2
n
+
1
-
a
1
a
2
n
+
1
+
a
1
+
a
2
n
-
a
2
a
2
n
+
a
2
+
.
.
.
.
.
+
a
n
+
2
-
a
n
a
n
+
2
+
a
n
is equal to :
(1)
n
n
+
1
2
.
a
2
-
a
1
a
n
+
1
(2)
n
n
+
1
2
(3) (n + 1) (a
2
– a
1
)
(4) None of these
(4) None of these
Answer
1
Amitesh Kumar
Subject: Maths
, asked on 14/4/18
If
p
th,
q
th and
r
th terms of an A.P. are in G.P. whose common ratio is
k
, then the root of equation
q
-
r
x
2
+
r
-
p
x
+
p
-
q
=
0
other than unity is :
(1)
k
2
(2)
k
(3) 2
k
(4) None of these
Answer
1
Aditya Singh
Subject: Maths
, asked on 29/3/18
Solve this:
7.
If one GM, g and two AM's, p and q are inserted between two numbers a and b, then (2p
-
q)
(p
-
2q) is equal to
(a) g2 (b)
-
g
2
(c) 2g (d) 3g
2
Answer
2
Aditya Singh
Subject: Maths
, asked on 28/3/18
Solve this:
Answer
1
Mitali
Subject: Maths
, asked on 27/3/18
What is the formula used when in.a series the terms have common difference in AP...??!
Answer
7
1
2
3
4
5
Next
What are you looking for?
Thanks for solving it in advance:
Q. If a1,a2,a3,..............an are in harmonic progression, then a1a2+a2a3+....+an-1an is equal to.
(a) (n-1)a1an (b) na1an
(c) n(a1+an) (d) None of these.
(Also tell ? represents what ??)
Q What is value of :-
Q.
Q.
1. .
Q.195. The value of the infinite series
is
(a)
(b) 2e
(c)
(4)
Q68. If a1, a2, a3, ...... a2n+1 are in A.P. then is equal to :
(1)
(2)
(3) (n + 1) (a2 – a1)
(4) None of these
(4) None of these
other than unity is :
(1) k2 (2) k (3) 2k (4) None of these
7. If one GM, g and two AM's, p and q are inserted between two numbers a and b, then (2p q)
(p 2q) is equal to
(a) g2 (b) g2
(c) 2g (d) 3g2