質問: express each number as a product of its prime factors `(i) 140 \ (ii) 156 \ (iii) 3825 \ (iv) 5005 \ (v) 7429` express each number as a product of its prime factors `(i) 140 \ (ii) 156 \ (iii) 3825 \ (iv) 5005 \ (v) 7429`
回答: solution: 1)140=2*2*5*7 2)156=2*2*3*13 3)3825=3*3*5*5*17 4)5005=5*7*11*13 5)7429=17*19*23 we can see that after multiplying they form the given no.