كيف طريقة حلها مساله احصاء

[اسفنج بوب]

A student takes a 6 question multiple choice quiz with 4 choices for each question. If the
student guesses at random on each question, what is the probability that the student gets

exactly 3 questions correct?
والجواب 0.132
كيف طريقه حلها
الرجاء ردوا بسرعة