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The final quantity (Posted on 2015-02-18) Difficulty: 2 of 5
Given a list of all composite numbers below 1000, how many will remain after erasure of numbers divisible by 2,3 or 5?

Rem1: "or" is inclusive i.e. and/or.
Rem2: number 1 is neither prime nor composite, so it does not appear on the initial list.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
A third method by handSteve Herman2015-02-19 22:15:37
Some Thoughtsre: Two methods by handAdy TZIDON2015-02-19 00:11:05
SolutionTwo methods by handJer2015-02-18 22:56:24
Solutioncomputer solutionCharlie2015-02-18 10:27:51
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