IMO Mathematics Olympiad (SOF) Class 5: Questions 159  165 of 837
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Question number: 159
Question
How many of the following digits have at least one line of symmetry?
Choices
Choice (4)  Response  

a.  3 

b.  5 

c.  4 

d.  1 

Question number: 160
Question
What is the smallest number of squares that must be added so that the line XY becomes a line of symmetry?
Choices
Choice (4)  Response  

a.  2 

b.  5 

c.  3 

d.  4 

Question number: 161
Question
What is 12.34 rounded to the nearest value?
Choices
Choice (4)  Response  

a.  123.4 

b.  12.3 

c.  1234 

d.  4321 

Question number: 162
Question
In Hindu Arabic numeral, there are ________ basic numerals.
Choices
Choice (4)  Response  

a.  7 

b.  8 

c.  10 

d.  9 

Question number: 163
Question
90909090 just comes after________.
Choices
Choice (4)  Response  

a.  90909089 

b.  90909091 

c.  90909099 

d.  All of the above 

Question number: 164
Question
Successor of 89898989 is ________.
Choices
Choice (4)  Response  

a.  89, 898, 099 

b.  89, 89, 89, 09 

c.  89, 898, 990 

d.  Question does not provide sufficient data or is vague 

Question number: 165
Question
What fraction of the figure is blue shaded?
Choices
Choice (4)  Response  

a.  8 

b. 


c.  3 

d. 

