Mathematics Test

Result

Mathematics Test - 20

Score
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Rank
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Weekly Quiz Competition

Question 1
1 / -0

With reference to a universal set, the inclusion of a subset in another, is relation, which is

A
Symmetric only

B
Equivalence relation

C
Reflexive only

D
None of these

Solution
Question 2
1 / -0

The relation R defined on the set of natural numbers as {(a, b) : a differs from b by 3}, is given by

A
{(1, 4, (2, 5), (3, 6),.....}

B
{(4, 1), (5, 2), (6, 3),.....}

C
{(1, 3), (2, 6), (3, 9),..}

D
None of these

Solution
Question 3
1 / -0

A relation from P to Q is

A
A universal set of P × Q

B
P × Q

C
An equivalent set of P × Q

D
A subset of P × Q

Solution

A relation from P to Q is a subset of P × Q
Question 4
1 / -0

If f(x) is a function whose domain is symmetric about the origin, then f(x) + f(–x) is

A
One-one

B
Even

C
Odd

D
Both even and odd

Solution

(a, b)

g(x) = f(x) + f(–x)

g(–x) = f(–x) + f(x) = g(x)

therefore g(x) is even
Question 5
1 / -0

A
-2

B
√(-4)

C
2

D
None of these

Solution
Question 6
1 / -0

The value of log3 4log4 5log5 6log6 7log7 8log8 9 is

A
1

B
2

C
3

D
4

Solution
Question 7
1 / -0

A
49

B
625

C
216

D
890

Solution
Question 8
1 / -0

A
-3/16

B
5/16

C
3/16

D
-5/16

Solution
Question 9
1 / -0

A
2

B
1

C
2^n-1

D
2^n-2

Solution
Question 10
1 / -0

A
7

B
8

C
9

D
9 1/2

Solution