Question # 1

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360°

180°

90°

None of these

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0

1

2

None of these

The point ________ is in the solution of the inequality 2x - 3y < 4

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(0, -2)

(1, -3)

(2, 2)

(3, 0)

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If all members of a sequence are real numbers then it is called a

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Series

Function

Real sequence

Range

45° = ______

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Cofactor of an element a_ijis defined by

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(-1)^i+j|A|

(-1)^i+jM_ij

(-1)^i+jM^-1

None of these

If the exponent in the binomial expansion is 6, then the middle term is

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2nd term

3rd term

4th term

5th term

The middle term of (x-y)⁸is

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25 x⁴y⁴

70 x⁴y⁴

120 x⁴y⁴

97x⁴y⁴

In order of A is m x n and order of B is n x p then order of AB is

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m x m

n x n

m x p

p x m

A class contains nine boys and three girls, in how many ways can the teacher choose a committee of four?

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460

495

272

60

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The obtuse angle between lines = -2 and y = x +2 is

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120°

135°

150°

140°

For any positive integer n

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ABn = Bn A ⇔ AB = BA

ABn = Bn A⇔ A,B are square matrices and AB = BA

ABn = BnA⇔ A + B

ABn = BnA ⇔ A and B are square matries

The foot of perpendicular from (α,β,γ) only y-axis is

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(α, 0, 0)

(0,β, 0)

(0, 0, γ)

(0, 0, 0)

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The set of the first elements of the orders pairs forming a relation is called its

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Relation in B

Range

Domain

Relation In A

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O (0,0)is called:

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Position vector

Free vector

Unite vector

Null vector

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(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

The additive inverse of 1 is

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1

-1

0

Does not exist

The slope of y-axis is

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0

undefined

1

xy= 2 is:

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a constant function

an identity function

an improper function

implicit function

The trigonometric function are continuous whenever

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They are defined

their limit exist

Their period is given

All are incorrect

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1

-1

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a sec(ax + b) + c

- a sec(ax + b) + c

i⁹ =

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i²

-1

1

i

In school there are 150 students Out of these 80 students enrolled for mathematics class 50 enrolled for English class and 60 enrolled for Physics class The student enrolled for English cannot attend any other class but the students of mathematics and Physics can take two courses at a time Find the number of students who have taken both physics and mathematics.

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40

30

50

20

Ifᵨ> 1 , then the conic, is:

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Ellipse

Parabola

Hyperbola

None of these

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ECAT Pre General Science Mathematics Online Test MCQs With Answers

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