For the third day of Child Genius the 14 remaining competitors take on geography. With questions in the morning round covering 4.5 billion years of our planet's history, the nerves are really kicking in. And the stakes couldn't be higher as the competitor with the lowest score will face immediate elimination. In the afternoon the remaining competitors take on a challenging memory round in which they must memorise a sequence from a pack of 100 randomly shuffled cards, each with an image of a different world flag. At the end of that round, a further two competitors will be knocked out.