IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 1028  1034 of 1040
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Question number: 1028
Question
A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn random from the bag. The probability that all of them are red is,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1029
Question
Which of the following statement is true for square numbers?
Choices
Choice (4)  Response  

a.  Square numbers are always positive  
b.  Square number can only have even number of zeroes at the end  
c.  Both a. and b. are correct  
d.  None of the above 
Question number: 1030
Question
A bag contains 50p, 25p, 10p coins in the ratio 5: 6: 10, amounting to Rs. 500. Find the total number of coins
Choices
Choice (4)  Response  

a.  3800  
b.  1000  
c.  2100  
d.  1330 
Question number: 1031
Question
When a certain number is multiplied by 15, the product consists entirely of fives. The smallest such number is ________
Choices
Choice (4)  Response  

a.  37  
b.  24  
c.  41  
d.  32 
Question number: 1032
Question
Three numbers are in the ratio of 2: 3: 4. The sum of their cubes is 50688. The numbers are ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1033
Question
The area of a square field is sq. m. the length of each side of the field is________.
Choices
Choice (4)  Response  

a.  11.92  
b.  22.3  
c.  14.07  
d.  12.03 
Question number: 1034
» Algebraic Expressions and Identities
Question
If , then x is equal to ________.
Choices
Choice (4)  Response  

a.  2  
b.  6  
c.  4  
d.  5 