IMO Level 1 Mathematics Olympiad (SOF) Class 6: Questions 181  188 of 1059
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Question number: 181
Question
693 is divisible by
Choices
Choice (4)  Response  

a.  3 & 9  
b.  3  
c.  9  
d.  6 
Question number: 182
Question
Rohan’s monthly salary is Rs. 18000. He spends Rs. 2050 for his home expenses, Rs. 1590 for purchasing clothes, Rs. 870 for purchasing groceries, milk, etc. , Rs. 1900 for purchasing medicine and pays a rent of Rs. 4500 in a particular month. How much does he save in this month?
Choices
Choice (4)  Response  

a.  Rs. 6870  
b.  Rs. 8609  
c.  Rs. 7050  
d.  Rs. 7090 
Question number: 183
Question
Prime factorization of 13915 is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 184
Question
Number of prime and coprime numbers from 80 to 100 are
Choices
Choice (4)  Response  

a.  7  
b.  4  
c.  5  
d.  3 
Question number: 185
Question
Product of two integer is If one of the integers is , then the other is
Choices
Choice (4)  Response  

a.  9  
b.  1  
c.  0  
d.  19 
Question number: 186
Question
Observe the following patterns. Then find the sum of .
………………………………………………………. ……………………………………………………….
Choices
Choice (4)  Response  

a.  180  
b.  150  
c.  320  
d.  200 
Question number: 187
Question
The expression is equivalent to , uses the ________ property.
Choices
Choice (4)  Response  

a.  Commutative  
b.  Associative  
c.  Closure  
d.  Identity 
Question number: 188
Question
Multiply the unit’s place of the number obtained by reversing the digits of the number 78923 with the hundred’s place of the number obtained by interchanging the digits in the unit’s place and the thousand’s place of the same number, we get________.
Choices
Choice (4)  Response  

a.  16  
b.  54  
c.  64  
d.  63 