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Find the LCM and HCF of the following integers by applying the prime factorization method.
1. \(12, 15\) and \(21\)
\(HCF\) of \(12, 15\) and \(21=\)
\(LCM\) of \(12, 15\) and \(21=\)
2. \(17, 23\) and \(29\)
\(HCF\) of \(17, 23\) and \(29=\)
\(LCM\) of \(17, 23\) and \(29=\)
3. \(8, 9\) and \(25\)
\(HCF\) of \(8, 9\) and \(25=\)
\(LCM\) of \(8, 9\) and \(25=\)
Answer variants:
\(420\)
\(5\)
\(2400\)
\(1800\)
\(11399\)
\(3\)
\(1\)
\(2\)
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