Question 1120596
For 3 this is 12C3, the number of ways it can happen *.32^3*0.68^9=0.2241 

At least 4 is 1-biomialcdf(12,.32,3)=0.5681

At most 2 is 0,1,2
for 0 it is .68^12 or 0.0098
for 1 it is 12*.32*.68^11 or 0.0552
for 2 it is 66*.32^2*.68^10 or 0.1428
That probability total is 0.2078