Question 6 - Past Year MCQ (Maths Standard) - Chapter 1 Class 10 Real Numbers

Last updated at April 16, 2024 by

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Question 6 If n is a natural number, then 2(5n + 6n) always ends with (a) 1 (b) 4 (c) 3 (d) 2Now, 5n always ends with 5 6n always ends with 6 Thus, (5n + 6n) always ends with 5 + 6 = 11 Thus, 2 × (5n + 6n) always ends with 2 × 11 = 22 i.e. it always ends with 2 So, the correct answer is (d)

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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, Social Science, Physics, Chemistry, Computer Science at Teachoo.