NDA questions
2295 published questions with worked solutions.
- If A and B are square matrices of order 2 such that (AB)= (BA), then which one of the following is correct?
- What is 2x 4x- 4x 6x- 6x 2x equal to?
- If x=- 3 4 and x is in the second quadrant, then what is the value of x x?
- What is the value of the following? cosec ( 7 6 ) ( 5 3 )
- What is the value of the following? 31^ 33^ 35^ 57^ 59^
- If f(x)= vmatrix 1 & x & x+1 2x & x(x-1) & x(x+1) 3x(x-1) & 2(x-1)(x-2) & x(x+1)(x-1) vmatrix then what is f(-1)+f(0)+f(1) equal...
- The equation ^ -1 x- ^ -1 x= 6 has
- What is the value of the following? ( 24^ + 66^ )( 24^ - 66^ )
- A chord subtends an angle 120° at the centre of a unit circle. What is the length of the chord?
- What is (1+ - cosec , )(1+ + ) equal to?
- What is 1+ ^2 1+ ^2 - ( 1- 1- )^2 equal to?
- If 7 +24 =25, then what is the value of ( + )?
- If 3 =4 , then what is the value of (45^ + )?
- ^ -1 x+ ^ -1 x= 2 holds, when
- If A= 1 7 , then what is 2A equal to?
- The sides of a triangle are m, n and m^2+n^2+mn . What is the sum of the acute angles of the triangle?
- Consider the following statements : 1. A= 1, 3, 5 and B= 2, 4, 7 are equivalent sets. 2. A= 1, 5, 9 and B= 1, 5, 5, 9, 9 are...
- Consider the following statements : 1. The null set is a subset of every set. 2. Every set is a subset of itself. 3. If a set has...
- Let R be a relation defined as xRy if and only if 2x+3y=20, where x, y N. How many elements of the form (x, y) are there in R?
- Consider the following statements : 1. A function f: Z Z , defined by f(x)=x+1, is one-one as well as onto. 2. A function f: N N...