In Number Properties strategy guide, chapter 1 Q5 If j is divisible by 12 and 10 is j divisible by 24 I have not understood the explanation given My approach: Prime Factors of 12: 2 * 2 * 3 Prime Factors of 10: 2*5 Prime factors of j would be : 2 * 2 * 3 & 2 * 5 But the book gives it as 2 * 2 * ...