IMO Level 1 Mathematics Olympiad (SOF) Class 6: Questions 664  670 of 1059
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Question number: 664
Question
Perimeter of a square is the sum of the lengths of all the ________ sides.
Choices
Choice (4)  Response  

a.  4  
b.  2  
c.  6  
d.  3 
Question number: 665
Question
A bus travels 126 km in 3 hours and a train travels 315 km in 5 hours. The ratio of their speeds is
Choices
Choice (4)  Response  

a.  1: 3  
b.  126: 315  
c.  3: 5  
d.  2: 3 
Question number: 666
Question
In a quiz program, the ratio of correct answers to incorrect answers is 5: 2. If 16 incorrect answers are given, then the number of correct answers given is
Choices
Choice (4)  Response  

a.  80  
b.  30  
c.  20  
d.  40 
Question number: 667
Question
If 12 men can do a piece of work in 18 days, in how many days will 8 men complete it?
Choices
Choice (4)  Response  

a.  10 days  
b.  days  
c.  27 days  
d.  12 days 
Question number: 668
Question
How many envelopes can be made out of a sheet of paper 324 cm by 172 cm, if each envelope requires a piece of paper of size 18 cm by 12 cm?
Choices
Choice (4)  Response  

a.  582  
b.  258  
c.  285  
d.  528 
Question number: 669
» Symmetry and Practical Geometry
Question
A perpendicular is drawn to a line segment at N using protractor and point P is marked on perpendicular, then
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 670
» Symmetry and Practical Geometry
Question
Which square must be shaded so that the figure has a line of symmetry?
Choices
Choice (4)  Response  

a.  P  
b.  Q  
c.  S  
d.  R 