IQ Challenge #3 Which two are the same? Which cube is formed? Which cube is formed? Le Cong Tuan Minh 2016 Which is the correct piece to fit the cube? IQ Challenge #3 Which is the correct knot? Le Cong Tuan Minh 2016 Which is the correct (viewed from above)? How many dots needed? Key Le Cong Tuan Minh 2016 D&E B B D C C Le Cong Tuan Minh 2016