Question # 1

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none of these

The statement that a group can have more than one identity elements is

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True

False

Fallacious

Some times true

If B⊆ A, then complement of B in A is = -----------------------

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A-B

A∩B

B-A

A∪B

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The identity elements with respect to subtraction is

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0

1

-1

Does not exist

A set having only one element is called

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An empty set

Universal set

A singleton set

A power set

{1, 2, 3, 4,.....} is set of ______

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Natural numbers

Whole numbers

Integers

Rational numbers

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

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A = B

B = C

A = C

None of these

If A⊆ B, and B is a finite set, then

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n (a) < n(B)

n(B)<(A)

n(A)≤ n (B)

n(A)≥ n(B)

The set {1,-1,i,-i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

In set builder notation the set {0, 1, 2, ............, 100} can be written as

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If A ⊆ B then A ∪ B is

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A

B

A'

A ∩B

The set of complex numbers forms a group under the binary operation of

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Addition

Multiplication

Division

Subtraction

The multiplicative inverse of x such that x = 0 is

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-x

Does not exist

1/x

±1

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A is proper subset of B

A is an improper subset of B

A is equivalent to B

B is subset of A

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A

B

A'B'

B'A

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An empty set

Universal set

A singleton set

None of these

Power set of X i.e P(X) _______ under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

Which of the following is the subset of all sets?

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ECAT Mathematics Chapter 23 MCQs With Answers

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