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Question 8 - 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

Prime factors of the denominator of a rational number with the decimal expansion 44.123 are

(a) 2,3   (b) 2, 3, 5   (c) 2, 5   (d) 3, 5

Transcript

Question 8 Prime factors of the denominator of a rational number with the decimal expansion 44.123 are (a) 2,3 (b) 2, 3, 5 (c) 2, 5 (d) 3, 5 Now, 44.123 = 44123/1000 Now, Prime factors of denominator = Prime factors of 1000 = 103 = (2 × 5)3 ∴ Prime factors are 2, 5 So, the correct answer is (c)
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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