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Last updated at May 24, 2022 by Teachoo
Ex 3.1, 1 Write all the factors of the following numbers : (c) 21 1 × 21 = 21 2 × 3 × 7 = 21 4 × 5 × 6 × 7 × 3 = 21 We stop here as 7 and 3 have occurred earlier Factors of 21 are 1, 3, 7, 21