IMO Mathematics Olympiad (SOF) Class 6: Questions 175  182 of 1049
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Question number: 175
Question
The smallest number which when divided by 4, 16, 32 and 40 and leaves a remainder of 3, 15, 31 and 39 respectively is
Choices
Choice (4)  Response  

a.  161 

b.  159 

c.  147 

d.  239 

Question number: 176
Question
HCF of two coprime numbers is
Choices
Choice (4)  Response  

a.  0 

b.  1 

c.  2 

d.  None of the above 

Question number: 177
Question
The integer which is 7 more than is
Choices
Choice (4)  Response  

a.  2 

b.  4 

c. 


d.  16 

Question number: 178
Question
When a number is divided by seven, it has a remainder of 2. When it is divided by six, it has remainder of 3. What is the number?
Choices
Choice (4)  Response  

a.  16 

b.  44 

c.  38 

d.  9 

Question number: 179
Question
The coprime numbers from the following pairs, is
Choices
Choice (4)  Response  

a.  7 and 63 

b.  63 and 81 

c.  35 and 21 

d.  36 and 25 

Question number: 180
Question
The smallest value of ‘a’ in the number 321a8 so that it is divisible by 8 is:
Choices
Choice (4)  Response  

a.  1 

b.  2 

c.  4 

d.  3 

Question number: 181
Question
693 is divisible by
Choices
Choice (4)  Response  

a.  6 

b.  9 

c.  3 & 9 

d.  3 

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. 7090 

b.  Rs. 8609 

c.  Rs. 7050 

d.  Rs. 6870 
