IMO Mathematics Olympiad Class 6: Questions 211  218 of 1049
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Question number: 211
Question
A number is always divisible by 72 if
Choices
Choice (4)  Response  

a.  It is divisible by both 2 and 36 

b.  It is divisible by both 3 and 24 

c.  It is divisible by both 6 and 12 

d.  All a. , b. and c. are correct 

Question number: 212
Question
The integer which is 5 less than is
Choices
Choice (4)  Response  

a.  11 

b. 


c.  9 

d.  2 

Question number: 213
Question
When a number is divided by eight, it has a remainder of 2. When it is divided by nine, it has remainder of 1. What is the number?
Choices
Choice (4)  Response  

a.  34 

b.  10 

c.  15 

d.  12 

Question number: 214
Question
What least value should be given to * so that the number 653 * 47 is divisible by 11?
Choices
Choice (4)  Response  

a.  9 

b.  6 

c.  7 

d.  1 

Question number: 215
Question
The numbers which have more than two factors are called ________.
Choices
Choice (4)  Response  

a.  Prime & Composite 

b.  Prime 

c.  Composite 

d.  Question does not provide sufficient data or is vague 

Question number: 216
Question
The LCM of two numbers is 198. If one number is 396 and another is 66, then the HCF is
Choices
Choice (4)  Response  

a.  231 

b.  132 

c.  144 

d.  154 

Question number: 217
Question
The integer which is 7 more than is
Choices
Choice (4)  Response  

a.  4 

b.   10 

c.  16 

d.   4 

Question number: 218
Question
There are 216 black balls in a basket. A boy takes out 8 black balls from it and replaces them by 16 white balls. He continues to do so, till all black balls are replaced by white balls. Find the number of white balls put in the basket?
Choices
Choice (4)  Response  

a.  485 

b.  654 

c.  432 

d.  462 
