Win one of five Guinness World Records 2018 books signed by the cast of CBBC's Officially Amazing
*This competition is now closed. The winners have been notified via email.
To celebrate the seventh series of CBBC's Officially Amazing, Guinness World Records is offering five lucky people the chance to win a copy of Guinness World Records 2018, signed by the show's stars - including Mr Cherry, Sizzlin' Steve, US Ray, Ben Shires, Haruka Kuroda and Desiree Burch.
Simply answer the question and fill out the form to be in with a chance of winning!
Watch the trailer below to find out what to expect from series seven of Officially Amazing! Starting on the 20th April, the show will air on CBBC every Friday at 17:25.
The competition closes on Thursday 31 May 2018. The winners will be chosen randomly from the people who get the answer right and notified via email. Winners will be asked for a postal address that we can to send their prize to.
The competition is open to UK residents only. If you are under 13, please ask an adult to fill out the form for you. Terms and conditions apply.