Olympiad workbookIOQMPermutation and Combination
Unconventional dice are to be designed such that the six faces are marked with numbers from 1 to 6 with 1 and 2 appearing on opposite faces. Further, each face is colored either red or yellow with opposite faces always of the same color. Two dice are considered to have the same design if one of them can be rotated to obtain a dice that has the same numbers and colors on the corresponding faces as the other one. Find
Correct answer
24
Step-by-step solution
Fix 1 and 2 anywhere in 1 way Fix 3 anywhere in 1 way Now remaining 3 faces can be filled in 3! 2 ways and coloring them in 2 2 2 ways Total distinct dice = 3! 2 8=24 ways