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The least common multiple of 21 and 560 is: 1. 5602. 16803. 11204. 840 |
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Answer» Correct Answer - Option 2 : 1680 Calculation: Find the prime factorization of 21 ⇒ 21 = 3 × 7 Find the prime factorization of 560 ⇒ 560 = 2 × 2 × 2 × 2 × 5 × 7 Multiply each factor the greater number of times it occurs above to find the LCM. ⇒ LCM = 2 × 2 × 2 × 2 × 3 × 5 × 7 ⇒ LCM = 1680 ∴ The least common multiple of 21 and 560 is 1680. |
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