\(22^n=2^n.11^n\)
\(122!=1.2...11...22...33...44...55...66...77...88...99...110...121\)
\(=11^{11}.A\)
\(\Rightarrow n_{max}=11\)
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Question 1: Find the highest common factor of 147x and 98y if HCF(x;y)=1.
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