Mathematics (NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension): Questions 78  82 of 224
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Question number: 78
» Mathematics » Quadratic Equations
Question
The roots of the equation are 1 and 2. The roots of the equation must be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

Question number: 79
» Mathematics » Basic Geometry
Question
ABCD is a square of side a, ABO is an equilateral triangle and OL is perpendicular to CD. Then area of the trapezium AOLD is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 80
» Mathematics » Rational Numbers
Question
20 L of a mixture contains milk and water in the ratio 5: 3. If 4 L of this mixture are replaced by 4 L of milk, the ratio of milk to water in the new mixture will become
Choices
Choice (4)  Response  

a.  9: 7 

b.  8: 3 

c.  4: 6 

d.  7 : 3 

Question number: 81
» Mathematics » Statistics
Question
The mean of a set of number is x. If each number is divided by 3, then the new mean is
Choices
Choice (4)  Response  

a. 


b.  x 

c.  3x 

d.  x + 3 

Question number: 82
» Mathematics » Basic Geometry
Question
In figure , if and , then find the value of x.
Choices
Choice (4)  Response  

a.  36° 

b.  96° 

c.  48° 

d.  Question does not provide sufficient data or is vague 
