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Class VI
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Class IX
Class X
ICSE Grade IX - Indices
Question
1
1.
(
5
4
)
(-4)
(
-4
5
)
(-4)
=
(
41
20
)
(-2)
(
41
20
)
(-6)
(
37
18
)
(-4)
(
45
22
)
(-4)
(
41
20
)
(-4)
Question
2
2.
If
625
(
k
+
2
)
=
3125
(
k
+
1
)
, find
k
6
4
2
0
3
Question
3
3.
−
5
c
6
.
−
3
c
7
=
15
c
42
15
c
13
−
8
c
13
−
8
c
42
13
c
15
Question
4
4.
(
a
21
a
)
8
=
a
168
a
8
a
168
a
a
(
21
a
+
8
)
a
21
a
Question
5
5.
Find the
4th
root
of
1
81
1
1
5
(
-1
3
)
1
3
Question
6
6.
Simplify the expression
5
8
✕
5
8
✕
5
8
8
24
5
23
5
25
5
24
3
24
Question
7
7.
Simplify
(-3)
-3
✕
5
2
✕
5
-3
3
3
✕
(-3)
2
✕
5
-3
-1
✕
5
3
3
8
-1
✕
5
2
3
6
-1
✕
5
2
5
8
-1
✕
5
2
3
8
-2
✕
5
2
3
8
Question
8
8.
(
2
h
4
.
i
(-3)
)
-1
=
i
3
2
h
4
i
3
.
2
h
(-4)
h
3
2
i
(-4)
2
i
3
h
(-4)
−
2
i
3
−
h
(-4)
Question
9
9.
Simplify
(
s
j
s
k
)
l
(
s
k
s
l
)
j
(
s
l
s
j
)
k
0
s
s
(
j
+
k
+
l
)
1
-1
Question
10
10.
If
7
(
3
j
+
3
)
÷
2401
=
7
5
, find
j
2
5
0
1
3
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