Campus Maths Puzzle Numerical Ability

(2^48)! has 12^n.what is n?

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Campus Other Question

Kavya and madhav leaves point x and y towards y and x respectively simultaneously and travel in the same route.After meeting each other on the way,kavya takes 4 hours to reach her destination ,while madhav takes 9 hours to reach his destination.If the speed of kavya is 48 km/hr ,what is the speed of madhav?
a) 72 kmph b)32 mph c)20mph d)non What is the greatest power of 143 which can divide 125! exactly???