NDA questions
2295 published questions with worked solutions.
- What is the area of the region enclosed between the curve y^2=2x and the straight line y=x?
- If x^my^n=a^ m+n , then what is dy dx equal to?
- What is dx x(x^n+1) equal to?
- What is the minimum value of |x-1|, where x R?
- What is the value of k such that integration of 3x^2+8-4k x with respect to x, may be a rational function?
- Consider the following statements for f(x)=e^ -|x| : 1. The function is continuous at x=0. 2. The function is differentiable at...
- What is the maximum value of x x?
- What is _ x 0 3^x+3^ -x -2 x equal to?
- What is the derivative of ^ -1 x with respect to ^ -1 x?
- The function u(x, y)=c which satisfies the differential equation x(dx-dy)+y(dy-dx)=0, is
- Consider the following statements : 1. The function f(x)= x increases in the interval (0, ). 2. The function f(x)= x increases in...
- What is the solution of the differential equation ( dy dx )=x?
- The numbers 4 and 9 have frequencies x and (x-1) respectively. If their arithmetic mean is 6, then what is the value of x?
- If three dice are rolled under the condition that no two dice show the same face, then what is the probability that one of the...
- If P(A B)= 5 6 , P(A B)= 1 3 and P( not A)= 1 2 , then which one of the following is **not** correct?
- A data set of n observations has mean 2M, while another data set of 2n observations has mean M. What is the mean of the combined...
- What is the standard deviation of the observations - 6 , - 5 , - 4 , -1, 1, 4 , 5 , 6 ?
- The arithmetic mean of 100 observations is 40. Later, it was found that an observation '53' was wrongly read as '83'. What is the...
- A husband and wife appear in an interview for two vacancies for the same post. The probability of the husband's selection is 1 7...
- A dealer has a stock of 15 gold coins out of which 6 are counterfeits. A person randomly picks 4 of the 15 gold coins. What is...