Mental Ability (NCO Cyber Olympiad Class 9): Questions 120  125 of 219
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 440 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
Question number: 120
» Mental Ability » Number Games » Number Analogies
Question
Match the followingListⅠ  ListⅡ 
(A)
 (i) Irrational 
(B)
 (ii) Irrational 
(C)
 (iii) Irrational 
(D) 0.5555…  (iv) Irrational 
Choices
Choice (4)  Response  

 
a. 


b. 


c. 


d. 


Question number: 121
» Mental Ability » Basic Algebra
Question
If is factor of , find the value of q.
Choices
Choice (4)  Response  

a.  30 

b.  30 

c.  29 

d.  29 

Question number: 122
» Mental Ability » Basic Geometry
Question
How many circles of 3 cm radius can be drawn through each of three given 3 points as center of the circle?
Choices
Choice (4)  Response  

a.  Infinity 

b.  3 only 

c.  9 only 

d.  All of the above 

Question number: 123
» Mental Ability » Basic Arithmetic
Question
The bacteria in a culture grows by 20 % in the first hour, decreases by 10 % in the second hour and again increases by 20 % in the third hour. If at the end of the third hour the count of bacteria is 100000. The original count of bacteria in the sample is________
Choices
Choice (4)  Response  

a.  129300 

b.  129000 

c.  129900 

d.  129600 

Question number: 124
» Mental Ability » Basic Algebra
Question
If is factor of , find the value of a.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 125
» Mental Ability » Basic Arithmetic
Question
Sterling gold is 92.5 % pure gold. How many grams of sterling gold must be mixed to a 90 % gold alloy to obtain a 500 gm of a 91 % gold alloy?
Choices
Choice (4)  Response  

a.  100 gm 

b.  50 gm 

c.  150 gm 

d.  200 gm 
