NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Swastik Sharma
Subject: Maths
, asked on 11/11/17
16) A circle is divided into 5 sectors with ratio of areas 1 : 2 : 3 : 4 : 5. Find the angle subtended at the centre of the circle by the largest sector.
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
W
h
a
t
i
s
t
h
e
v
a
l
u
e
o
f
t
h
e
e
x
p
r
e
s
s
i
o
n
a
a
a
a
-
1
f
o
r
a
=
2
?
A
)
2
B
)
1
C
)
1
2
D
)
1
2
4
Answer
5
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
I
f
a
b
=
a
c
,
w
h
e
r
e
b
a
n
d
c
a
r
e
n
o
n
-
z
e
r
o
,
a
n
d
a
≠
-
1
o
r
1
,
t
h
e
n
w
h
a
t
i
s
t
h
e
v
a
l
u
e
o
f
e
x
p
r
e
s
s
i
o
n
b
c
a
?
A
)
a
b
c
B
)
(
b
c
)
a
C
)
1
D
)
0
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
W
h
a
t
i
s
t
h
e
v
a
l
u
e
o
f
t
h
e
e
x
p
r
e
s
s
i
o
n
-
2
0
+
-
2
-
2
÷
-
2
0
-
-
2
-
2
?
A
)
3
5
B
)
4
3
C
)
5
3
D
)
5
4
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
s
o
l
v
e
W
h
a
t
i
s
t
h
e
s
i
m
p
l
i
f
i
e
d
f
o
r
m
o
f
t
h
e
e
x
p
r
e
s
s
i
o
n
50
50
÷
25
25
?
A
)
10
75
B
)
25
100
C
)
50
75
D
)
100
25
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
I
f
8
2
x
=
16
x
+
4
,
t
h
e
n
x
e
q
u
a
l
s
A
)
1
B
)
2
C
)
3
D
)
8
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
I
f
a
=
11
,
t
h
e
v
a
l
u
e
o
f
a
-
25
-
a
-
27
i
s
A
)
120
×
11
-
27
B
)
60
×
11
-
24
C
)
121
×
10
-
27
D
)
60
×
10
-
26
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
Q. What is the multiplicative inverse of 9
25
?
A) 25
9
B) 25
–9
C) 9
–25
D) –9
25
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
Q. What is the value of the expression
2
3
×
8
–
2
?
A) 2
9
B) 2
6
C) 2
–6
D) 2
–9
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
I
f
x
+
1
x
=
3
,
t
h
e
n
w
h
a
t
i
s
t
h
e
v
a
l
u
e
o
f
t
h
e
e
x
p
r
e
s
s
i
o
n
x
2
+
1
x
2
?
A
)
1
B
)
3
C
)
5
D
)
7
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
Q. What is the value of the expression
18
.
26
2
-
11
.
74
2
28
.
41
+
36
.
79
?
A) 1
B) 3
C) 10
D) 30
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
Q. What is the value of the expression (
x
2
+
4) (
x +
3) ?
A)
x
3
+ x
2
+
6
x +
12
B)
x
3
+
3
x
2
+
4
x +
12
C)
x
3
+
2
x
2
+
6
x +
12
D)
x
3
+
4
x
2
+
4
x +
12
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
solve
I
f
t
h
e
e
x
p
r
e
s
s
i
o
n
4
y
2
+
9
4
x
2
-
6
x
y
i
s
w
r
i
t
t
e
n
a
s
(
A
y
-
B
)
2
,
t
h
e
n
t
h
e
r
e
s
p
e
c
t
i
v
e
v
a
l
u
e
s
o
f
A
a
n
d
B
a
r
e
A
)
4
a
n
d
9
4
x
B
)
4
a
n
d
-
9
4
x
C
)
2
a
n
d
3
2
x
D
)
2
a
n
d
-
3
2
x
Answer
2
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
W
h
a
t
i
s
t
h
e
p
r
o
d
u
c
t
o
f
m
x
2
a
n
d
x
2
+
y
+
m
x
?
A
)
2
m
x
2
+
2
x
y
+
m
x
B
)
2
m
x
3
+
m
x
3
y
+
m
2
x
4
C
)
m
x
2
+
m
x
+
2
x
+
y
+
2
D
)
m
x
2
+
2
m
x
+
x
+
y
+
4
Answer
1
S.k.lakshin
Subject: Maths
, asked on 11/11/17
Solve
T
h
e
e
x
p
r
e
s
s
i
o
n
3
2
x
+
7
2
c
a
n
b
e
e
x
p
e
n
d
e
d
a
s
A
)
12
x
2
+
28
x
+
49
B
)
12
x
2
+
31
x
+
52
C
)
12
x
2
+
84
x
+
147
D
)
36
x
2
+
84
x
+
49
Answer
1
Prev
5
6
7
8
9
Next
What are you looking for?
Q. What is the multiplicative inverse of 925?
A) 259
B) 25–9
C) 9–25
D) –925
Q. What is the value of the expression ?
A) 29
B) 26
C) 2–6
D) 2–9
Q. What is the value of the expression ?
A) 1
B) 3
C) 10
D) 30
Q. What is the value of the expression (x2 + 4) (x + 3) ?
A) x3 + x2 + 6x +12
B) x3 + 3x2 +4x +12
C) x3 + 2x2 + 6x +12
D) x3 + 4x2 + 4x +12