Brain observation test: if you have hawk eyes, find the number 605 out of 905 in 15 seconds. There is 2 months by Evelyn Archer

Brain Observation Test: if you have a sharp eye, find the number 2609 among 2906 in 20 seconds. There is 2 months by Evelyn Archer

Riddle: Can you find the odd one out in 18 seconds? Visual challenge There is 2 months by Evelyn Archer

Challenge for geniuses: Solve and find the value of each element in 20 seconds. There is 2 months by Evelyn Archer

Puzzle for brilliant minds: solve and find the value of the shapes. There is 3 months by Evelyn Archer

Observation test: if you have a keen eye, find the number 7666 between 7696 within 20 seconds. There is 3 months by Evelyn Archer