Class 10 Mathematics — Chapter 1: Real Numbers
69 practice questions · 23 Easy · 23 Medium · 23 Hard
Free NCERT-aligned multiple-choice practice for Class 10 Mathematics, Chapter 1 (Real Numbers). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 69.
Sample questions
The prime factorisation of 156 is:
156 = 2 × 78 = 2 × 2 × 39 = 2² × 3 × 13.
Which of these has a terminating decimal expansion?
p/q (lowest terms) terminates iff q has only 2 and/or 5 as prime factors. 3125 = 5⁵.
Which method is used to prove that √2 is irrational?
Assume √2 = p/q in lowest terms; show p and q must both be even — contradicting 'lowest terms'.
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