OK, SO15, 18 24, 52, 53, 54 cross out one from each side at a time: now it is between 24 and 52, and right between those is 38, because 24 + 14 = 38 and 52 - 14 = 38. Hope this helps.
It is: 79-38 = 41
14 + 38 = 52
14.6341% difference.
52
the answer between 52 and 12 is 40, because 52-12 = 40.
LCM(52, 38) = 988.
57
20
52-1, single action only.
Bullet diameter on a 38 is .357; on a 380 it is .355 Case is longer on a 38.
164-54=112