Can you solve this tricky Barbie brainteaser in under five seconds?

Can you solve our tricky Barbie brainteaser? (Image: Daily Express) After weeks of anticipation, Barbie is released in cinemas on Friday July 21. Directed by Greta Gerwig and starring Margot Robbie and Ryan Gosling, the film is one of the most talked about of the year. As the reviews roll in and fans queue outside cinemas around the country, there could be time to do a quick brainteaser . To mark the release of Barbie, the Daily Express has designed a  brainteaser  to test the brain’s observational skills. In the above image, you have row upon row of capital Bs. Among them, there is one rogue capital D. Can you spot the odd letter out in under five seconds? The answer to the brainteaser (Image: Daily Express) Did you spot the odd one out? No worries if not, the answer is highlighted above. The capital D was in the sixth column from the right on the third row. Brainteasers are a great way not just to spend time in queues or on the commute, but to test and push the brain. The reason for this is the brain, like other muscles in the body, needs to be stretched and pushed to remain as healthy as possible. The healthier the brain the less likely it could be to develop a neurodegenerative disease in the future such as dementia . Dementia is one of the fastest-growing conditions in the UK. According to some charities, one person is diagnosed with dementia every three minutes. Furthermore, some estimates suggest that one in three people will develop dementia in their lifetime. While new treatments are being developed for the condition, no cure for any form of dementia has been found.