Ok, don't hate me, I am a Math teacher and just had to point something out. All your fractions are around the same percentages. 4/25 = 0.16 or 16% 6/28 =0.21 or 21% 7/39 =0.179 or 18% 1/5 =0.2 or 20% To me, it looks kind of steady. Probability says that the more you buy the more that could break. I haven't ever had to return a broken toy, but I am sure I will someday!