Question # 1

The condition for polynomial equation ax2 + bx + c = 0 to be quadratic is

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a > 0

a < 0

a≠ 0

a≠ 0,b ≠ 0

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An empty set

Universal set

A singleton set

None of these

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0

1

-1

In the expansion of (x+y)n the coefficient of 5th and 12th terms are equal then n=

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12

n=14

17

n=15

An unbiased die is thrown. Then the probability of getting a prime is

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1/2

2/3

3/4

None of these

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If n is odd then the middle terms in the expansion of (a + x)ⁿare

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If A is a set then any subset R of A x A is called

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relation on A

relation on B

relation from A to B

relation from B to A

The set {1,-1, i, -i} form a group under

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Addition

Multiplication

Subtraction

None

The number of tangents to the circle x2+ y2 -8x -6y +9 =0 which pass through the point (3,-2) is

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2

1

0

None of these

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