I did the work and it says 0.3683492496 and more number but i believe its 0.3 without all those other numbers
C. would be the correct device to use in trials.
But the actual probability is:
(1-1/4)^5
243/1024
(about 23.73% chance none of the five chose vanilla)
The product of 12 and -5 is -5(12) = -60. Note that 12(-5) = -60 also.

we know that, the mixture amount is the sum of 11 + p, or
11 + p = m.
we also know that, the total value is also a sum of
25.3 + 4.5p = 3.29m.
About 6 inches. Originally 5.906 in...