Mandy is walking on a tetrahedron (triangular pyramid). At each second, she moves to an adjacent vertice each with probability 1/2. What is the probability that she is where he started after 4 seconds?
1st Person to solve this also gets an added bonus of 100,000 Clintz + El Exotico. (Net prize 100,000 Clintz + El Exotico + 3 Mandy: Worth 250K)
2nd Person gets an added bonus of 50,000 clintz + Dr Elisa (Net prize 50,000 clintz + Dr Elisa+ 3 Mandy: Worth 160K)
Everyone else who gets it right gets 3 Mandy (Worth 30K)
DM me your answers! Accepting first 10 correct responses