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1. Fill in the blanks.(a) Prime factorisation of 15 :-Prime factorisation of 90: _LCM of 15 and 90 = -(b) Prime factorisation of 18 : -Prime factorisation of 24 : -LCM of 18 and 24 = _(C) Prime factorisation of 25: _Prime factorisation of 15 :LCM of 25 and 15 =

Answer»

1)1*3*5 is the right answer

a) 15=3×590 = 2×45 =2×3×15 =2×3×3×5LCM of 15 and 90 = 3×5×3×2=90



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