The LCM of smallest two digit composite number and smallest composite number is

(a) 12                 (b) 4              (c) 20            (d) 44

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Question 3 The LCM of smallest two digit composite number and smallest composite number is (a) 12 (b) 4 (c) 20 (d) 44 Prime numbers are 2, 3, 5, 7, …. Composite numbers are 4, 6, 8, 10, 12, …. Therefore, Smallest Composite number is 4 Smallest two digit composite number is 10 Finding LCM of 4 and 10 So, LCM = 2 × 2 × 5 = 20 ∴ Correct answer is (c) - 20

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.