All Exams Test series for 1 year @ ₹349 only
Question

Which of the following pairs of numbers are co-prime?

The correct answer is

119, 239

Two numbers are co-prime if their HCF is 1.

30, 201: 3 divides both, HCF = 3.

49, 217: 7 divides both, HCF = 7.

48, 111: 3 divides both, HCF = 3.

119 = 7 × 17 and 239 is prime, sharing no common factor, so HCF = 1.

Hence, the answer is 119, 239.

Was this answer helpful?

Similar Questions

  1. Which of the options has the two prime numbers whose product is the biggest even number less than 30?805

  2. The sum of three prime numbers is 112. If one number exceeds the other by 36, what is the product of these numbers?

  3. The sum of the first 19 prime numbers is:

  4. If 5.12 × 50625 × 0.5488 = $2^a3^b5^c7^d$, then find the value of a + b + c + d.

  5. Which of the following number pairs is NOT co-prime?

  6. Which of the following pairs of numbers is co-prime with each other?

  7. What is the sum of all prime numbers between 0 and 32?

  8. The number of students in a class is a prime number greater than 50 but less than 58. How many students are there in the class?


Important Questions from Number System

  1. What is the value of 1 2 + 2 2 + 3 2 + ......21 2 ?

  2. Which sequence is correct to represent the hierarchical chain of number system?

    (Where N - Natural Numbers

    W - Whole Numbers

    Q - Rational Numbers

    Z - Integers)

  3. What must be added to 45680 to make it exactly divisible by 9?

  4. How many zeroes are there at the end of the following product? 

    1 x 5 x 10 x 15 x 20 x 25 x 30 x 35 x 40 x 45 x 50 x 55 x 60

  5. Let XYZ be a three-digit number, where (x + y + Z) is not a multiple of 3. Then (XYZ + YZX + ZXY) is not divisible by

Need Expert Advice?
Upcoming Exams
RRB Technician
October 06, 2026
RRB JE
October 27, 2026
Test Series
RRB Group D img
Railways
RRB Group D Mock Test Series 2026 (Latest Pattern)
1154 Tests 1 Tests Free
1680 Attempts
4.1(103)
English, Hindi

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