IMO- Mathematics Olympiad Class 9: Questions 799 - 805 of 919

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Question number: 799

» Statistics and Probability

MCQ▾

Question

Two coins are tossed simultaneously. The probability of getting at two head is ________

Choices

Choice (4) Response

a.

14

b.

13

c.

34

d.

0

Question number: 800

» Everyday Mathematics

MCQ▾

Question

In a class, the number of boys is more than the number of girls by 12% of the total strength. The ratio of boys to girls is ________

Choices

Choice (4) Response

a.

15:11

b.

14:11

c.

8:11

d.

11: 14

Question number: 801

» Everyday Mathematics

MCQ▾

Question

Suraj’s weight is 4 times more than the weight of Rahul. Their total weight is 110 kg. What is Rahul’s weight?

Choices

Choice (4) Response

a.

22 kg

b.

92 kg

c.

42 kg

d.

52 kg

Question number: 802

» Polynomials

MCQ▾

Question

If ab+ba=1 , then a3b3 =

Choices

Choice (4) Response

a.

2

b.

0

c.

3

d.

1

Question number: 803

» Linear Equations in Two Variables

MCQ▾

Question

The number of values of k for which the system of equations x+y=2 , kx+y=4, x+ky=5 has atleast one solution is ________.

Choices

Choice (4) Response

a.

3

b.

2

c.

1

d.

0

Question number: 804

» Everyday Mathematics

MCQ▾

Question

Coffee worth Rs. 140 per kg and Rs. 160 per kg are mixed with a third variety in the ratio 1:1:2 . If the mixture is worth Rs. 180 per kg, the price of the third variety per kg will be

Choices

Choice (4) Response

a.

Rs. 220

b.

Rs. 240

c.

Rs. 230

d.

Rs. 210

Question number: 805

» Everyday Mathematics

MCQ▾

Question

A rectangular park 60 m long and 40 m wide has concreate crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?

Choices

Choice (4) Response

a.

6 m

b.

3 m

c.

4 m

d.

5 m

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