PYQ Vault
EbooksTutor

Day 12: NDA Maths

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

  1. Question 1

    Permutation & Combination. This type asked 4 times: NDA 1 2018, NDA 2 2021, NDA 1 2023, NDA 1 2026. This one: NDA 1 2026

    44
    How many numbers greater than 1000 can be formed using the digits 0, 1, 2 and 3 (repetition of digits is not allowed)?

    Tap an option to check your answer.

  2. Question 2

    Quadratic Equations. This type asked 4 times: NDA 1 2020, NDA 2 2021, NDA 2 2022, NDA 1 2026. This one: NDA 1 2026

    11
    If the highest degree coefficient is equal to 1, then what is the total number of quadratic equations which are unchanged on squaring their roots?

    Tap an option to check your answer.

  3. Question 3

    Sets & Relations. This type asked 4 times: NDA 1 2019, NDA 1 2022, NDA 2 2022, NDA 1 2026. This one: NDA 1 2026

    41
    Let R be a relation on the set N of natural numbers defined by R={(x,y):x,y∈N and x=y3}R=\{(x,y):x,y\in N\text{ and }x=y^3\}. Which of the following statements is/are correct? I. R is symmetric relation. II. R is transitive relation. Select the answer using the code given below.

    Tap an option to check your answer.

  4. Question 4

    Statistics. This type asked 4 times: NDA 1 2017, NDA 2 2021, NDA 2 2024, NDA 1 2026. This one: NDA 1 2026

    111
    Let two lines of regression be x+y+11=0x+y+11=0 and 2x+3y+4=02x+3y+4=0 for some data. What is the value of correlation coefficient between x and y?

    Tap an option to check your answer.

  5. Question 5

    Trigonometric Identities. This type asked 4 times: NDA 2 2019, NDA 1 2021, NDA 2 2022, NDA 1 2026. This one: NDA 1 2026

    31
    If θ\theta lies in the fourth quadrant and 3cot⁡θ+4=03\cot\theta+4=0, then what is the value of sin⁡2θ+cos⁡2θ\sin2\theta+\cos2\theta?

    Tap an option to check your answer.