Question # 1

180° = _____________:

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π radians

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p is false and q is true

both p and q are false

p is true and q is false

both p and q are true

If two rows (or two columns) in a square matrix are identical (i.e. corresponding elements are equal), the value of the determinant is:

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0

1

-1

±1

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A matrix in which each element is 0 is called:

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The roots of the equation:

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complex

irrational

rational

none of these

Conjugate of complex number (-a, -b) is:

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(-a, b)

(-a, -b)

(a, -b)

none of these

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singular

non-singular

rectangular

null

A dice is thrown. The probability to get an even number is:

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1

none of these

The objects in a set are called:

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elements

sub-sets

whole numbers

overlapping sets

For a square matrix A, |A| equals:

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A^t

|A^t|

-|A^t|

-A^t

Inverse of an element in a group is:

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infinite

finite

unique

not possible

The identity element with respect to addition is:

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0

1

-1

0 and 1

One card is drawn at random from a pack of 52 cards. The probability that the card drawn a king is:

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none of these

If z₁ = 4i and z₂ = 3 - 9i, then z₁ + z₂ =

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3 - 5i

3i - 5

7 - 9i

3 + 5i

A function whose domain is the set of natural numbers is called the:

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series

sequence

means

convergent

A dice is rolled, the probability of getting a number which is even or greater than 4 is:

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none of these

A sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

If α, ß, Γ are the angles of a oblique triangle, then:

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α = 90°

ß = 90°

Γ = 90°

none of these

Which one is a quadrant angle ?

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60°

180°

120°

30°

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