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WorksheetsQuiz on Indices and Logarithms
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Simplify : 2³×2⁵
a)
2²
b)
2⁸
c)
2¹⁵
d)
2¹⁰
2.
Evaluate: 5⁷÷5⁴
a)
25
b)
625
c)
1225
d)
125
3.
Which is equal to Log10 100000
a)
5
b)
2
c)
6
d)
1
4.
Express in Logarithm: 81=3⁴
a)
Log4 3=81
b)
Log81 4=3
c)
Log3 81=4
d)
3Log 81= 4
5.
If 7x =343, then x=
a)
⅛
b)
-6
c)
5
d)
3
6.
Which is equal to Log10 0.001
a)
4
b)
-1
c)
2
d)
-3
7.
Simplify: 813/4
a)
16
b)
27
c)
¼
d)
9
8.
If Log2 Y=5, what is Y?
a)
125
b)
64
c)
28
d)
32
9.
Given that Log 2=0.3010, Log 3=0.4771 and Log 7= 8451. Evaluate Log 21
a)
9.2345
b)
3.4201
c)
0.3451
d)
1.6232
10.
If 25x-1 = 1/625, then the value of x is
a)
½
b)
-1
c)
4
d)
3/2
11.
Which is not true ?
a)
Xa ÷ Xb =Xa-b
b)
Xa ÷ Xb =Xa+b
c)
X0=2
d)
(Xa)b=Xab
12.
Simplify: 49½
a)
32
b)
81
c)
7
d)
24
13.
Simplify: Log 45-log 15+ Log 2
a)
Log 6
b)
Log 18
c)
Log32
d)
Log75
14.
Simplify: 641/2 × 40 × 44
a)
8²
b)
4⁵
c)
16⁵
d)
2¹¹
15.
Evaluate Log3 8.624
a)
1.9612
b)
1.0003
c)
3.2005
d)
0.9451
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