The challenge is to find out the Odd Number “16” in this Numerical Optical Illusion. Can you prove you have an IQ level of 169 or higher with 20/20 vision?

Only 1% can spot the hidden odd number in this ‘421’ numerical optical illusion. Test your observation, IQ, and Hawk–Eye vision in this fun brain teaser.

Find the 2o2 in the grid of 202s in just 12 seconds. Only 1 in 10 people can complete this challenge. Optical illusions are spreading like wildfire on the internet.

High-scoring Sparks, finding power in numbers, host Sun Coach Lynne Roberts believes balance helps her team, which has won seven of its last eight games, maintain its scoring surge ...

The puzzle below features the number 6768 written on an image. The challenge that arises for you is to find the number '6767' which is the odd one out.

Cullinan was moved to protect the species from over-farming. Man makes incredible discovery after finding odd-looking bird on property: 'It's an extraordinary long-lived species' first appeared on ...

Number columns allow you to take large numbers and subtract one from another. Find out more in this Bitesize Primary KS2 Maths guide.