Quadratic Equations (IMO- Mathematics Olympiad Class 10): Questions 31 - 36 of 80

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Question number: 31

» Quadratic Equations

MCQ▾

Question

A convex polygon has 20 diagonals. The number of its sides is ________

Choices

Choice (4) Response
a.

9

b.

8

c.

7

d.

12

Question number: 32

» Quadratic Equations

MCQ▾

Question

Which of the statements given below is correct. If discriminant for equation 4x220x+9=0 is D________

Choices

Choice (4) Response
a.

D=4.5and0.5

b.

D=6.5and6

c.

D=4and3

d.

D=2.5and4.5

Question number: 33

» Quadratic Equations

MCQ▾

Question

The roots of ax2+bx+c=0,a0 are real and unreal, if b24ac is ________

Choices

Choice (4) Response
a.

=0

b.

<0

c.

>0

d.

0

Question number: 34

» Quadratic Equations

MCQ▾

Question

A man walks a distance of 50 km in a given time. If he walks 5 km/hr faster, he will perform the journey 5 hrs before. His normal rate of walking, is ________

Choices

Choice (4) Response
a.

5kmhr

b.

2kmhror8kmhr

c.

3kmhr

d.

9kmhr

Question number: 35

» Quadratic Equations

MCQ▾

Question

Two numbers whose sum is 6 and absolute value of whose difference is 8 are the roots of the equation ________

Choices

Choice (4) Response
a.

x26x+7=0

b.

x26x+8=0

c.

x2+6x8=0

d.

x26x7=0

Question number: 36

» Quadratic Equations

MCQ▾

Question

The expression 4x2+16x+m is divisible by (x+3) . Then m is a divisor of ________

Choices

Choice (4) Response
a.

20

b.

4

c.

16

d.

12

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