IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 651  657 of 929
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Question number: 651
» Linear Equations in Two Variables
Question
The number of ways of writing the number in the form (a, b are integers)
Choices
Choice (4)  Response  

a.  1 

b.  Infinitely many 

c.  0 

d.  Finitely many 

Question number: 652
Question
A class starts at 10 a. m. and lasts till 1.27 p. m. four periods are held during this interval. After every period, 5 minutes are given free to the students. The exact duration of each period is ________
Choices
Choice (4)  Response  

a.  48 minutes 

b.  51 minutes 

c.  42 minutes 

d.  53 minutes 

Question number: 653
Question
The product of all the solutions of , is ________.
Choices
Choice (4)  Response  

a.  4 

b. 


c.  16 

d. 


Question number: 654
Question
The number of positive integers k for which the equation has an integer solution for x is ________
Choices
Choice (4)  Response  

a.  2 

b.  3 

c.  5 

d.  8 

Question number: 655
Question
The median of the observation 30,91,0, 64,42,80,30,5, 117,71 is ________
Choices
Choice (4)  Response  

a.  52.5 

b.  51 

c.  53 

d.  52 

Question number: 656
» Introduction to Euclid's Geometry
Question
In the figure y = 30˚, then ∠DOE is________ (Assume X = Y)
Choices
Choice (4)  Response  

a.  150˚ 

b.  30˚ 

c.  60˚ 

d.  90˚ 

Question number: 657
Question
A milk vendor has 2 cans of milk. The first contains water and the rest milk. The second contains water. How much milk should he mix from each of the containers so as to get 12 liters of milk such that the ratio of water to milk is?
Choices
Choice (4)  Response  

a.  7 liters, 5 liters 

b.  5 liters, 7 liters 

c.  6 liters, 6 liters 

d.  4 liters, 8 liters 
