NDA (National Defence Academy) Mathematics: Questions 14  19 of 384
Access detailed explanations (illustrated with images and videos) to 384 questions. Access all new questions we will add tracking exampattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.
Rs. 250.00 or
How to register?
Question number: 14
Question number: 15
» Algebra » Complex Numbers » Cube Roots of Unity
Question
What is equal to, where is the cube root of unity?
Choices
Choice (4)  Response  

a. 


b.  3ω 

c.  1 

d.  0 

Question number: 16
» Analytical Geometry of Two and Three Dimensions » Distance of a Point from a Line
Question
The angle of elevation of a tower at a level ground is . The angle of elevation becomes . when moved towards the tower. If the height of tower is , then what is equal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 17
» Analytical Geometry of Two and Three Dimensions » Distance Formula
Question
If the midpoint between the points and lies on the line what is k equal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 18
» Matrices and Determinants » Operations on Matrices Determinant of a Matrix,
Question
What is equal to?
Choices
Choice (4)  Response  

a. 


b. 


c.  15xyz 

d. 


Question number: 19
» Algebra » Arithmetic Progression
Appeared in Year: 2016
Question
The sixth term of an is and it’s common difference is greater than What is the first term of the so that the product of the fourth and fifth terms is greatest?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

