This week we have a seemingly impossible situation, with a relatively simple explanation . . . once you've worked it out!
A grandmother and grandfather have two grandchildren who were born in the same year. The odd, and seemingly impossible situation, is that the first grandchild to be born has a birthday the day after the second grandchild to be born.
How is this possible?
As usual you can post the answers as a comment on this website, reply to the post on Facebook, or retweet or reply on Twitter @quizmastershop.
Answer at 9.00 on Monday