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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade IX - Logarithms
Question
1
1.
Express
log
2
√
p
q
r
3
s
4
in terms of
log
2
p
,
log
2
q
,
log
2
r
and
log
2
s
1
2
log
2
p
−
1
2
log
2
q
−
3
log
2
r
+
4
log
2
s
1
2
log
2
p
−
1
2
log
2
q
−
3
log
2
r
−
4
log
2
s
1
2
log
2
p
+
1
2
log
2
q
+
3
log
2
r
−
4
log
2
s
1
2
log
2
p
−
1
2
log
2
q
+
3
log
2
r
−
4
log
2
s
1
2
log
2
p
+
1
2
log
2
q
−
3
log
2
r
−
4
log
2
s
Question
2
2.
Express
log
6
a
c
2
√
b
in terms of
log
6
a
,
log
6
b
and
log
6
c
log
6
a
+
2
log
6
c
+
1
2
log
6
b
log
6
a
−
2
log
6
c
+
1
2
log
6
b
2
log
6
c
−
1
2
log
6
b
+
log
6
a
log
6
a
−
2
log
6
c
−
1
2
log
6
b
log
6
a
+
2
log
6
c
−
1
2
log
6
b
Question
3
3.
log
78
9
−
log
78
3
=
log
78
7
log
81
6
log
78
6
log
78
5
log
75
6
Question
4
4.
log
8
39
=
log
8
96
+
log
39
96
log
8
96
✕
log
39
96
log
8
96
÷
log
39
96
log
39
96
÷
log
8
96
log
8
96
−
log
39
96
Question
5
5.
Express
log
3
√
p
3
q
in terms of
log
p
and
log
q
log
q
−
3
log
p
3
log
p
−
log
q
log
p
+
1
3
log
q
3
log
p
+
log
q
3
log
p
log
q
Question
6
6.
log
9
10
+
log
2
9
=
log
(
-1
5
)
log
3
5
log
1
3
log
1
5
log
2
(
1
5
)
Question
7
7.
log
37
−
log
57
=
log
35
57
log
37
57
log
2
(
37
57
)
log
13
19
log
37
55
Question
8
8.
log
10
6
27
4
=
4
log
27
✕
6
log
10
6
log
10
÷
4
log
27
4
log
27
+
6
log
10
4
log
27
÷
6
log
10
4
log
27
−
6
log
10
Question
9
9.
log
64
4096
=
1
3
4
2
0
Question
10
10.
log
81
9
=
1.5
2.5
7.5
8.5
0.5
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