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Tarunvir Singh
Subject: Maths
, asked on 11/12/17
Do question 1
Answer
1
Pavithra Saravanan
Subject: Maths
, asked on 28/11/17
If the fourth term in the expansion of (ax+1/x)n is 20/27 then find the value of n and a . Also find its 4th term from the end
Answer
1
Shivam Desale
Subject: Maths
, asked on 14/11/17
Qn no. 5
Answer
2
Soumyadeep Kar
Subject: Maths
, asked on 12/11/17
Q. Prove that
∑
r
=
1
k
-
3
r
-
1
3
n
C
2
r
-
1
=
0
,
w
h
e
r
e
K
=
3
n
2
and n is an even positive integer.
Answer
1
Soumyadeep Kar
Subject: Maths
, asked on 12/11/17
Q. Find the sum of series
3
1
!
+
5
2
!
+
9
3
!
+
15
4
!
+
23
5
!
+
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
∞
.
Answer
3
Shivam Desale
Subject: Maths
, asked on 10/11/17
Qn no. 1
Answer
1
Nura Mohammad
Subject: Maths
, asked on 9/11/17
Which of the following is larger
99^50+100^50 or 101^50
The part of the answer that is given in the photo please explain. How can we take 100^50 common?
=
2
[
C
1
50
(
100
)
49
+
C
3
50
(
100
)
47
+
.
.
.
.
.
]
=
2
[
50
(
100
)
49
+
C
3
50
(
100
)
47
+
.
.
.
.
]
=
100
50
+
o
t
h
e
r
p
o
s
i
t
i
v
e
t
e
r
m
s
>
100
50
S
o
,
101
50
-
99
50
>
100
50
,
i
.
e
.
,
101
50
>
99
50
+
100
50
H
e
n
c
e
,
101
50
i
s
l
a
r
g
e
r
t
h
a
n
99
50
+
100
50
Answer
1
Anushka Agrawal
Subject: Maths
, asked on 3/11/17
Please tell me the mistake in my answer to the following question as the answer is r=4
Answer
1
Soumyadeep Kar
Subject: Maths
, asked on 2/11/17
Find the coefficient of x
3
in the expansion of (1-2x+3x
2
-4x
3
)
Answer
3
Soumyadeep Kar
Subject: Maths
, asked on 2/11/17
Solve this:
Q). Find the coefficient of
x
2
y
4
z
2
in the expansion of
2
x
-
3
y
+
4
z
9
.
Answer
1
Shivam Gupta
Subject: Maths
, asked on 2/11/17
sir
Answer
1
Shivam Gupta
Subject: Maths
, asked on 2/11/17
1
sir
Answer
1
Shivam Gupta
Subject: Maths
, asked on 2/11/17
sir
Answer
1
Shivam Gupta
Subject: Maths
, asked on 2/11/17
sir
Answer
1
Shivam Gupta
Subject: Maths
, asked on 2/11/17
sir
Answer
1
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What are you looking for?
99^50+100^50 or 101^50
The part of the answer that is given in the photo please explain. How can we take 100^50 common?
Q). Find the coefficient of in the expansion of .