Weekly Brainteasers

Do you think you can work for GCHQ? Try this weeks brainteaser: Fill in the gap

Do you think you can work for GCHQ? Try this weeks brainteaser: Fill in the gap

Do you think you can work for GCHQ? Try this weeks brainteaser: Where next? Q: What follows:

Do you think you can work for GCHQ? Try this weeks brainteaser: Underground Q: What follows:

Do you think you can work for GCHQ? Try this weeks brainteaser: Q: Which is the odd one out?

Do you think you can work for GCHQ? Try this weeks brainteaser: Replace the Stars Q: What is missing?

Do you think you can work for GCHQ? Try this weeks brainteaser: Q:What completes the list?

Do you think you can work for GCHQ? Try this weeks brainteaser: Q: What's the final member of this sequence?

Do you think you can work for GCHQ? Try this weeks brainteaser: Q: Which of the following words is the odd one out?

Do you think you can work for GCHQ? Try this weeks brainteaser Q: What links: D, X, 4th, Y?

Do you think you can work for GCHQ? Try this weeks brainteaser. What is the only number in English that, when spelled out, has all its letters in alphabetical order?

Do you think you're smart enough to work for GCHQ? Do you think you're an expert code breaker? Try this teaser to see if you've got what it takes.