The prime factorisation of 3825 is

(a) 3 × 5 2 × 21   (b) 3 2 × 5 2 × 35  

(c) 3 2 × 5 2 × 17   (d) 3 2 × 25 × 17

 

This question is inspired from Ex 1.2, 1 (iii) - Chapter 1 Class 10 - Real Numbers

Slide21.JPG

Advertisement

Advertisement

  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

Transcript

Question 13 The prime factorisation of 3825 is (a) 3 × 52 × 21 (b) 32 × 52 × 35 (c) 32 × 52 × 17 (d) 32 × 25 × 17 Hence, 3825 = 3 × 3 × 5 × 5 × 17 = 32 × 52 × 17 So, the correct answer is (c)

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.