Find the probability that a number less than 4 on a 12 sided dice turns up on exactly 3 out of 6 tosses

Question

"Suppose that a die is made by marking the faces of a dodecahedron with the numbers 1-12. What is the probability that on exactly 3 out of 6 tosses a number less than 4 shows up?

Answer 1

P(less than 4)=3/12 or 1/4. {1,2,3}

P(at least 4 or greater)=9/12 or 3/4. {4,5,6,7,8,9,10,11,12}

P(getting less than 4 on exactly 3 out of 6 tosses)=(1/4)^3 × (3/4)^3