MCQ of Maths Class 9
Which of the following set have the closure property w.r.t addition.
{0}
{0,-1}
{0,1}
{0,-1, 42}
If a, b, c are the three real numbers than the property a=b and b =c = a = c is called ……………….. .
Symmetric property
Reflexive property
Transitive property
None
If a + ib is a complex number then conjugate of the complex number is given by …………… .
a + ib
-a + ib
a – ib
None of these
Write 423 with radical sign:
∛42
√43
3√43
√46
Log (mn) can be written as
(log m)n
m log n
n log m
log (mn)
The additive identity in real number is ………………. .
1
-1
0
None of these
The relation Y = logzx implies:
xy = z
zy = x
xz = y
a = lognx
Write 7√x in exponential form:
x
x1/7
x7
x2
Real part of 2ab(i+i2) is:
2ab
-2ab
2abi
-2abi
Who gave the idea of logarithms:
John Napier
Henry Briggs
Khwarizmi
Jobst Burgi
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