IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 600  606 of 929
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Question number: 600
Question
The mean weight of 120 students in a class is 100 kg. The mean weight of boys is 110 kg while that of the girls is 90 kg. The number of boys and girls are________
Choices
Choice (4)  Response  

a.  10,50  
b.  70,40  
c.  40,30  
d.  60,60 
Question number: 601
Question
The median of the observation 3,5, 9,5, 4,3, 1 is ________
Choices
Choice (4)  Response  

a.  1  
b.  4  
c.  5  
d.  3 
Question number: 602
Question
In a km. race A beats B by 50 metres or 5 seconds. Then A’s time over the course is ________
Choices
Choice (4)  Response  

a.  3 minutes 17 seconds  
b.  2 minutes 35 seconds  
c.  1 minutes 35 seconds  
d.  2 minutes 20 seconds 
Question number: 603
Question
If the mode of the following data 6,8, 7,6, x, 6,4, 8,7, 4,8, 7 is 6, then value of x is ________
Choices
Choice (4)  Response  

a.  4  
b.  8  
c.  1  
d.  6 
Question number: 604
Question
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 605
» Analytical Reasoning and Logical Reasoning
Question
If in the following groups of numbers after adding all the digits of each group, are arranged in decreasing order, then which will be middle group?
853,395,486,249,497,766,914
Choices
Choice (4)  Response  

a.  497  
b.  395  
c.  486  
d.  766 
Question number: 606
Question
A man rows downstream 40 50 km and upstream 20 30 km, taking 10 20 hours each time. The velocity of current is ________
Choices
Choice (4)  Response  

a.  2.5 km/hr  
b.  3.5 km/hr  
c.  0.5 km/hr  
d.  1.5 km/hr 