Question 30
Adam and Britt try to identify Carl’s favourite figure among those shown. Carl tells Adam only its colour and Britt only its shape; each knows what the other was told. Adam says: “I don’t know Carl’s favourite figure and I know that Britt doesn’t know it either.” Britt says: “At first I didn’t know, but now I do.” Adam says: “Now I know it too.” Which figure is Carl’s favourite?
