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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade IX - Logarithms
Question
1
1.
If
log
6
x
=
a
and
log
6
y
=
b
, then
6
(
a
+
b
)
=
y
b
6
a
x
a
b
x
y
Question
2
2.
log
10
17
+
log
3
4
=
log
2
(
15
34
)
log
1
2
log
15
32
log
13
34
log
15
34
Question
3
3.
log
625
3125
=
2.25
1.25
0.25
3.25
9.25
Question
4
4.
log
256
64
=
2.75
8.75
7.75
1.75
0.75
Question
5
5.
log
0.5200
−
log
0.0938
=
log
3.5467
log
5.5467
log
4.5467
log
6.5467
log
7.5467
Question
6
6.
log
79
−
log
98
=
log
79
98
log
2
(
79
98
)
log
11
14
log
81
98
log
79
96
Question
7
7.
log
37
6
+
log
37
4
=
log
37
9
log
37
10
log
37
11
log
39
10
log
34
10
Question
8
8.
log
10
30
=
-2
log
2
+
log
3
+
log
5
log
2
+
log
2
+
log
5
log
2
+
log
3
+
log
5
log
2
+
log
3
+
2
log
5
log
5
+
log
3
+
log
5
Question
9
9.
The base of
log
10
44
is
44
8
9
13
10
Question
10
10.
log
22.2400
−
log
68.6200
=
log
0.3241
log
2.3241
log
1.3241
log
8.3241
log
7.3241
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