CBSE math India

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Question 2. Without actual division state whether 21/120 has terminating or non terminating repeating decimal representation.
Answer 2.     21/120
                   = 3×7/2×2×2×3×5
                   = 7/2×2×2×5
                   The denominator is of the form 2^n 5^m   where m and n are  non negative integers.
                    Therefore terminating