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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade IX - Indices
Question
1
1.
Simplify the expression
(-7)
-5
✕
(-7)
-5
✕
(-7)
-5
(-7)
-16
(-7)
-14
(-10)
-15
(-7)
-15
(-4)
-15
Question
2
2.
If
25
(
u
+
20
)
=
625
32
=
5
v
, find
v
128
129
125
130
127
Question
3
3.
Simplify
(
4
p
.
25
(
p
−
2
)
.
36
(
p
−
5
)
16
(
p
−
2
)
.
5
(
p
−
5
)
.
6
(
p
−
5
)
)
4
(
p
+
2
)
.
5
(
−
p
+
8
)
.
6
(
−
p
+
5
)
4
(
−
p
+
4
)
.
5
(
p
+
1
)
.
6
(
p
−
5
)
4
2
.
5
3
.
6
0
4
(
−
p
+
4
)
.
5
(
−
p
+
8
)
.
6
(
−
p
+
5
)
Question
4
4.
p
17
p
8
=
17
p
9
p
136
p
9
p
25
8
p
9
Question
5
5.
8
q
6
.
2
q
9
=
16
q
54
16
q
15
15
q
16
10
q
54
10
q
15
Question
6
6.
(
x
)
(
a
−
b
)
.
(
x
)
(
b
−
c
)
.
(
x
)
(
c
−
a
)
=
2
(-2)
1
0
3
Question
7
7.
[
(
5/3
)
]
-3
(
8
7
)
=
-5
(
6
7
)
-5
(
10
7
)
-5
(
8
7
)
-4
(
8
7
)
-6
(
8
7
)
Question
8
8.
If
j
(
x
−
1
)
=
k
l
,
k
(
y
−
1
)
=
l
j
,
l
(
z
−
1
)
=
j
k
then
a)
(
x
+
y
+
z
)
=
1
b)
x
y
+
y
z
+
z
x
=
0
c)
x
y
z
=
1
d)
x
y
+
y
z
+
z
x
=
1
e)
x
y
+
y
z
+
z
x
=
x
y
z
{e}
{a,e}
{c,d,e}
{b,e}
Question
9
9.
Simplify
5
2
✕
4
-2
(-5)
2
✕
2
-2
4
-2
2
-3
(-1)
-2
2
-2
2
-1
Question
10
10.
3
√
0.2160
=
0.8
0.6
0.06
0.7
0.5
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