NCO Cyber Olympiad Class 7: Questions 140  143 of 416
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Question number: 140
» Mental Ability » Number Games
Question
The product of two numbers is 25 and the sum of their squares is 125. The sum of the number is.
Choices
Choice (4)  Response  

a.  21.21  
b.  13.22  
c.  16.90  
d.  None of the above 
Question number: 141
» Mental Ability » Basic Algebra
Question
If and be any two rational numbers then we define:
Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract from .
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 142
» Non Verbal Reasoning » Cubes and Dices
Question
Two positions of a dice are shown below. When there are 3 circles at the button, the number of circles at the button will be
Choices
Choice (4)  Response  

a.  4  
b.  5  
c.  6  
d.  1 
Question number: 143
» Mental Ability » Basic Statistics
Question
Match the following.
ListⅠ ( List I  ListⅡ ( List II 

(A) Orthocenter  (i) The point at which the three angle bisectors of a triangle meet 
(B) Circumcenter  (ii) The point of intersection of the perpendicular of the sides of a triangle 
(C) In Centre  (iii) The point at which the medians of a triangle meet 
(D) Centroid  (iv) The point at which the altitudes of a triangle meet 
Choices
Choice (4)  Response  

 
a. 
 
b. 
 
c. 
 
d. 
