IMO Mathematics Olympiad Class 9: Questions 799  805 of 919
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Question number: 799
Question
Two coins are tossed simultaneously. The probability of getting at two head is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  0 

Question number: 800
Question
In a class, the number of boys is more than the number of girls by of the total strength. The ratio of boys to girls is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  11: 14 

Question number: 801
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
Question
If , then =
Choices
Choice (4)  Response  

a.  2 

b.  0 

c.  3 

d.  1 

Question number: 803
» Linear Equations in Two Variables
Question
The number of values of k for which the system of equations, has atleast one solution is ________.
Choices
Choice (4)  Response  

a.  3 

b.  2 

c.  1 

d.  0 

Question number: 804
Question
Coffee worth Rs. 140 per kg and Rs. 160 per kg are mixed with a third variety in the ratio. 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
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 
