1. find the prime factorisation of the following numbers:- (i) 72 (ii) 450 (iv) 663
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i)72 = 2*2*2*3*3
ii)450=2*3*3*5*5
iii)663= 3*13*17
ii)450=2*3*3*5*5
iii)663= 3*13*17
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