PYQ Vault
EbooksTutor

Day 367: NDA Maths

5 questions. Try each one first, then open its answer.

  1. Question 1

    Functions. Asked once: NDA 2 2018

    3
    Consider the following expressions: 1. x+x2−1xx + x^2 - \frac{1}{x} 2. ax2+bx+x−c+dx−ex2\sqrt{ax^2 + bx + x - c + \frac{d}{x} - \frac{e}{x^2}} 3. 3x2−5x+ab3x^2 - 5x + ab 4. 2x2−ax+b3\frac{2}{x^2 - ax + b^3} 5. 1x−2x+5\frac{1}{x} - \frac{2}{x+5} Which of the above are rational expressions?

    Tap an option to check your answer.

  2. Question 2

    Lines. Asked once: NDA 1 2018

    51
    What is the distance between points that divide (4,3)-(5,7) internally and externally in ratio 2:3?

    Tap an option to check your answer.

  3. Question 3

    Matrices & Determinants. Asked once: NDA 1 2022

    10
    Let AA and BB be non-singular matrices of the same order such that AB=AAB=A and BA=BBA=B. Which of the following statements is/are correct? 1. A2=AA^2=A 2. AB2=A2BAB^2=A^2B Select the correct answer using the code given below:

    Tap an option to check your answer.

  4. Question 4

    Probability. Asked once: NDA 2 2021

    105
    In a cricket match, a batsman hits a six 8 times out of 60 balls he plays. What is the probability that on a ball played he does not hit a six?

    Tap an option to check your answer.

  5. Question 5

    Statistics. Asked once: NDA 1 2018

    109
    Consider statements: 1. Sum of deviations from mean is always zero. 2. Sum of absolute deviations is minimum around median. Which is/are correct?

    Tap an option to check your answer.