IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 115  124 of 1040
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Question number: 115
» Linear Equations in One Variable
Question
If the angles of a triangle are in the ratio 3: 2: 1, then the difference between the greatest and smallest angles is_.
Choices
Choice (4)  Response  

a.  
b.  
c.  
d.  60 
Question number: 116
» Linear Equations in One Variable
Question
A number consists of two digits whose sum is 10. If 18 is added to the number, the digits are interchanged. The number is_.
Choices
Choice (4)  Response  

a.  62  
b.  26  
c.  64  
d.  46 
Question number: 117
» Linear Equations in One Variable
Question
The value of for which is_.
Choices
Choice (4)  Response  

a.  21  
b. 
 
c.  20  
d. 

Question number: 118
» Linear Equations in One Variable
Question
The length of a rectangle is 5 m less than three times its breadth. The length and breadth of the rectangle if its perimeter is 150 m, is_.
Choices
Choice (4)  Response  

a.  55m, 30m  
b.  20m, 50m  
c.  55m, 20m  
d.  30m, 20m 
Question number: 119
» Linear Equations in One Variable
Question
A man is 6 years older than his wife and his wife is now thrice as old as their daughter, who is 10 years old. How old the man when his daughter was born?
Choices
Choice (4)  Response  

a.  26 years  
b.  20 years  
c.  22 years  
d.  25 years 
Question number: 120
» Linear Equations in One Variable
Question
Solution of the equation is_.
Choices
Choice (4)  Response  

a.  5  
b.  9  
c.  10  
d.  3 
Question number: 121
Question
Squares of an even numbers is always________.
Choices
Choice (4)  Response  

a.  Odd  
b.  Even  
c.  All of the above  
d.  None of the above 
Question number: 122
Question
If , then can be
Choices
Choice (4)  Response  

a.  13  
b.  12  
c.  11  
d.  15 
Question number: 123
Question
Square root of 2401 is________.
Choices
Choice (4)  Response  

a.  87  
b.  78  
c.  49  
d.  76 
Question number: 124
Question
A number is multiplied by itself and then 15 is subtracted from the product. If the final result is 2545, then find the original number.
Choices
Choice (4)  Response  

a.  30  
b.  31  
c.  13  
d.  32 