NDA (National Defence Academy) Mathematics: Questions 343  347 of 384
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Question number: 343
» Statistics and Probability » Union and Intersection of Events
Question
In a city, three daily newspaper are published, read readreadreadreado not read any of the thr
What is the percentage of persons who read all the three papers?
Choices
Choice (4)  Response  

a.  20 % 

b.  25 % 

c.  28 % 

d.  32 % 

Question number: 344
» Trigonometry » Trigonometrical Ratios
Appeared in Year: 2012
Question
What is the maximum value of
Choices
Choice (4)  Response  

a. 


b.   1 

c.  1 

d.  0 

Question number: 345
» Matrices and Determinants » Operations on Matrices Determinant of a Matrix,
Appeared in Year: 2012
Question
The sum and product of matrices exist. Which of the following implication are necessarily true?
 are square matrices of same order.
 are nonsingular matrices.
Select the correct answer using the code given below:
Choices
Choice (4)  Response  

a.  1 only 

b.  2 only 

c.  1 and 2 

d. 


Question number: 346
» Statistics and Probability » Union and Intersection of Events
Question
In a city, three daily newspaper are published, read o not read any of the threenewspaper
What is the percentage of persons who read onlyA but neither nor ? (Take )
Choices
Choice (4)  Response  

a.  23% 

b.  33% 

c.  21% 

d.  Question does not provide sufficient data or is vague 

Question number: 347
» Vector Algebra » Magnitude and Direction of a Vector
Question
What are the direction ratios of normal to the plane
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 
