Mathematics (NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension): Questions 7  12 of 224
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Question number: 7
» Mathematics » Basic Geometry
Question
The mean proportional between (2 + ) and (8  ) is
Choices
Choice (4)  Response  

a.  3 

b.  2 

c.  3: 1 

d.  2: 3 

Question number: 8
» Mathematics » Arithmetic
Question
Arjun bought two buffaloes for Rs. 30, 000, by selling one at a loss of 15 % and other at a gain of 19%, he found the selling price of both buffaloes is the same. The cost price of each buffalo is
Choices
Choice (4)  Response  

a.  Rs. 17500 and Rs. 12500 

b.  Rs. 16000 and Rs. 14000 

c.  Rs. 18000 and Rs. 12000 

d.  Rs. 17000 and Rs. 13000 

Question number: 9
» Mathematics » Basic Geometry
Question
A person can run around a circular path of radius 21 m in 44 s. In what time will the same person run a distance of 3 km?
Choices
Choice (4)  Response  

a.  16 min 30s 

b.  18 min 30s 

c.  16 min 40s 

d.  18 min 40s 

Question number: 10
» Mathematics » Coordinate Geometry
Question
If ABCD is a rhombus, then AB ^{2} + BC ^{2} + CD ^{2} + AD ^{2} is equal to
Choices
Choice (4)  Response  

a.  AD ^{2} + BC ^{2} 

b.  AO ^{2} + OC ^{2} 

c.  AC ^{2} + BD ^{2} 

d.  None of the above 

Question number: 11
» Mathematics » Trigonometry
Question
If and , then is equal to
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 

Question number: 12
» Mathematics » Statistics
Question
If the mean of five observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the mean of first three observations is
Choices
Choice (4)  Response  

a.  11 

b.  13 

c.  9 

d.  12 
