Question
Find the largest number of 4 digits which is exactly divisible by 18 25 and 35
Answers
Steve
18 = 2*3^2
25 = 5^2
35 = 5*7
so, any number divisible by all of those must be a multiple of
2*3^2*5^2*7 = 3150
so, what is the largest such number less than 10000?
25 = 5^2
35 = 5*7
so, any number divisible by all of those must be a multiple of
2*3^2*5^2*7 = 3150
so, what is the largest such number less than 10000?