NDA questions
2827 published questions with worked solutions.
- If P(B)= 3 4 , P(A B C )= 1 3 and P( A B C )= 1 3 , then what is P(B C) equal to?
- If a variable takes values 0, 1, 2, 3, , n with frequencies 1, C(n, 1), C(n, 2), C(n, 3), , C(n, n) respectively, then the...
- In a multiple-choice test, an examinee either knows the correct answer with probability p, or guesses with probability 1-p. The...
- If x_1 and x_2 are positive quantities, then the condition for the difference between the arithmetic mean and the geometric mean...
- Consider the following statements : 1. Variance is unaffected by change of origin and change of scale. 2. Coefficient of variance...
- The coefficient of correlation when coefficients of regression are 0 2 and 1 8 is
- If n=(2017)!, then what is 1 _2n + 1 _3n + 1 _4n + + 1 _ 2017 n equal to?
- In the expansion of (1+x)^ 43 , if the coefficients of (2r+1)^ th and (r+2)^ th terms are equal, then what is the value of r (r...
- What is the principal argument of (-1-i), where i= -1 ?
- Let and be real numbers and z be a complex number. If z^2+ z+ =0 has two distinct non-real roots with Re (z)=1, then it is...
- Let A and B be subsets of X and C=(A B') (A' B), where A' and B' are complements of A and B respectively in X. What is C equal to?
- How many numbers between 100 and 1000 can be formed with the digits 5, 6, 7, 8, 9, if the repetition of digits is not allowed?
- The number of non-zero integral solutions of the equation |1-2i|^x=5^x is
- If the coefficients of a^m and a^n in the expansion of (1+a)^ m+n are and , then which one of the following is correct?
- If x+ _ 15 (1+3^x)=x _ 15 5+ _ 15 12, where x is an integer, then what is x equal to?
- If and are different complex numbers with | |=1, then what is | - 1- | equal to?
- The equation |1-x|+x^2=5 has
- The binary number expression of the decimal number 31 is
- What is i^ 1000 +i^ 1001 +i^ 1002 +i^ 1003 equal to (where i= -1 )?
- The modulus-amplitude form of 3 +i, where i= -1 is