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LCM and HCF of 21,28,36,45 |
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Answer» Step-by-step EXPLANATION: by prime factorization $$\BEGIN{lgathered}21 = 3 \times 7 \\ 28 = 2 \times 2 \times 7 \\ 36 = 2 \times 2 \times 3 \times 3 \\ 45 = 3 \times 3 \times 5\end{lgathered}$$ now HCF is the common one therefore hcf = 1 (as there are no common factor ) lcm = $$\begin{lgathered}2 \times 2 \times 3 \times 3 \times 5 \times 7 \\ = 1260\end{lgathered}$$ hope it helps you mark as brainliest |
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