Question # 1

Matrices A = [aij] 2 x 3 and B =[bij] 3 x 2 are suitable for

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BA

A²

AB

B²

Minor of an element a_ijis denoted by

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M_ij

A_ij

|A|

None of these

A point where two of its boundary lines intersect is called

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Corner point

Feasible point

Vertex

Feasible solution

In R, the multiplicative identity is

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0

1

-1

None

A matrix in which the number of rows is not equal to the number of columns is called a

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Diagonal matrix

Rectangular matrix

Square matrix

Scalar matrix

Every whole number is

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A real number

An irrational number

A prime number

A negative integer

If b₁, b₂, b₃, ... are in G.P. with first term unity and common ratio r, then the minimum value of b₁- b₃+ b₅is equal to

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3/4

1/4

1

None of these

The process of finding a function whose derivative is given is called a

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Differentiation

Integration

Differential

None

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If S and P are the sum and the product of roots of a quadratic equation, then the quadratic equation is

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x²+ Sx - P = 0

x²- Sx + P = 0

x²- Sx - P = 0

X²+ Sx + P = 0

sin 2 α=

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

If nis positive integers, then 2ⁿ>2n+1, only when

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n≤ 3

n≥ 3

n≤ 2

n≤ 1

The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is

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32

16

18

8

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Multiplying each side of an inequality by (-1) will:

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Not effect

Change the sign

Become zero

Not defined

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none of these

0! = ______

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0

1

2

Not defined

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The distance of the plane 2x - 3y + 6z + 14 = 0 from the origin is

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14

2

-2

11

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0

-2

1

4

Which is an explicit function

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y = x²+ 2x - 1

x²+ xy + y²= 2

x²+ y²= xy + 2

All are

2.333....is a

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Irrational no

Complex no

Rational no

None of these

By expressing sin 125° in terms of trigonometrical ratios, answer will be

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sin 65° = 0.9128

sin 55° = 0.8192

sin 70° = 0.5384

sin 72° = 0.1982

A diagonal matrix is always

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Identity

Triangular

Scalar

Non-singular

Which one is a pair of allied angles

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(180° -θ)

(180° -θ,180° +θ)

(180° +θ)

None of these

(n + 2) (n + 1)n in factorial form is

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If five triangles are constructed having sides of the lengths indicated below, the triangle that will NOT be a right triangle is

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8, 15, 17

3, 4, 5

12, 15, 18

5, 12, 13

If the roots of ax²+ bx + c = 0 (a > 0) be greater than unity, then

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a + b + c = 0

a + b + c > 0

a + b + c < 0

None of these

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