1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards
  3. CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ]
Check sibling questions

Question 25 - CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ] - Solutions of Sample Papers for Class 10 Boards

Last updated at Dec. 16, 2024 by Teachoo

The LCM of two prime numbers p and q (p > q) is 221. Find the value of 3p – q.

(a) 4   (b) 28   (c) 38   (d) 48

Transcript

Question 25 The LCM of two prime numbers p and q (p > q) is 221. Find the value of 3p – q. (a) 4 (b) 28 (c) 38 (d) 48Given that p and q are prime numbers Therefore, HCF of p and q = 1 Now, we know that Product of two numbers = HCF × LCM p × q = 221 p × q = 13 × 17 And since p > q ∴ q = 13, p = 17 Now, 3p − q = 3(17) − 13 = 51 − 13 = 38 So, the correct answer is (c)
  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

    3. CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ]

    CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ] →
CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ] →
Class 10
Solutions of Sample Papers for Class 10 Boards

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo