## anonymous 4 years ago Suppose c = ab, where a, b, and c are integers and a and b are prime. How many positive integers less than or equal to c are neither evenly divisible by a nor evenly divisible by b? (Use the subtraction rule from the text). help please?

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1. anonymous

Yosh!!!... Are you still around?

2. anonymous

let us take an example... let 'a' =2 and 'b'=3 therefore the product will be $'ab' = 2 \times 3 = 6$ now how many times 2 can be evenly divisible by 3 = ? and how many times 3 can be evenly divisible by 2 = ? (if you relpy or try to provid answer to above questions I will write next steps...because...I don't like to write answer directly) ;)