Explore Exams
Test Series
Live Tests
Prev. Papers
Quizzes
Live Quizzes
Current Affairs
News
Prepp+
GamesLogin / Register
All Exams Test series for 1 year @ ₹349 only
Question
RRB ALP - 2018
Quantitative Aptitude

The square root of which of the following numbers is irrational?

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
Attempt Now
The correct answer is

6560

⇒ √6560 = √(16 × 410) = 4√410

⇒ √3969 = 63

⇒ √1764 = 42

⇒ √5625 = 75

∴ The square root of 6560 is irrational.
Was this answer helpful?

Similar Questions

  1. Which of the following numbers will have an irrational square root?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  2. Which of the numbers given below is NOT rational?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  3. The square root of which of the following numbers is irrational?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  4. Which of the following is a reducible fraction?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  5. Which of the following is a rational number?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  6. Which of the following numbers is irrational?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  7. Which of the following is a rational number?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  8. Which of the following numbers will have an irrational square root?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

Important Questions from Rational or Irrational Numbers

  1. Which of the following number is irrational?

    Quantitative Aptitude
    View Answer

  2. Which of the following numbers will have an irrational square root?

    RRB ALP - 2018
    Quantitative Aptitude
    View Answer

  3. What is the square root of 16 + 6√7?

    CDS - 2019
    Quantitative Aptitude
    View Answer

  4. A non-terminating but recurring decimal is:

    Quantitative Aptitude
    View Answer

  5. Which of the following is false?

    Quantitative Aptitude
    View Answer
Need Expert Advice?
Upcoming Exams
RRB Technician
October 06, 2026
RRB JE
October 27, 2026
RRB ALP
November 03, 2026
Test Series
RRB ALP img
Railways
RRB ALP 2026 Mock Test series
1035 Tests 1 Tests Free
1092 Attempts
4.3(239)
English, Hindi
View Test Series
More Questions from RRB ALP
1)

What will be A’s share of profit if the total profit is Rupees 1000 and is to be divided amongst A, B and C in the ratio 3 : 2 : 5?

2)

What is the power dissipated in a 5-ohm resistor carrying 2 A current?

3)

Which of the following numbers will have an irrational square root?

4)

A seller starts on her daily routine. She walks 7 km north, then turns west and walks 6 km, then turns south and walks 2 km, then turns west and walks 3 km, then turns to her left and walks 5 km. Where is she now with reference to her starting position?

5)

The weights of 3 boxes are 4, 7 and 10 kilograms. Which of the following CANNOT be the total weight, in kilograms, of any combination of these boxes?

6)

The difference between the place values of ‘4’ and ‘2’ in the number 833749502 is:

7)

An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms -1 ?

8)
Which one of the following is the largest source of natural energy to humans?
9)

Which of the following nations is not a permanent member of the United Nations Security Council?

10)

\(\frac{1}{{300}}\) written as a recurring decimal is:

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App