Observation test: If you have a keen eye, find the number 795 among 765 in 10 seconds. There is 2 weeks by Evelyn Hartley

Brain observation test: can you find the intruder in 18 seconds? Visual puzzle. There is 4 weeks by Evelyn Hartley

Brain Observation Test: If You Have Hawk Eyes, Find the Number 380 Between 300 in 15 Seconds. There is 1 month by Evelyn Hartley

Brain teaser for genius minds: can you find the missing number in this puzzle? There is 1 month by Evelyn Hartley

Find it: If you have a good eye, find the number 51 among 41 in 20 seconds. There is 2 months by Evelyn Hartley

Challenge for geniuses: Can you solve this numerical riddle in 30 seconds? There is 2 months by Evelyn Hartley

Visual test: if you have the eagle eye, find the inverted F in 15 seconds. There is 2 months by Evelyn Hartley

Brain test: If you have the eyes of an eagle, find the number 7354 among 7854 in 15 seconds. There is 2 months by Evelyn Hartley

Brain observation test: if you have hawk eyes, find the number 91 in 15 seconds. There is 2 months by Evelyn Hartley

Brain observation test: if you have hawk eyes, find the number 1700 in 15 seconds. There is 2 months by Evelyn Hartley

Brain observation challenge: if you have hawk eyes, find the number 773 in 15 seconds. There is 3 months by Evelyn Hartley

Brain observation test: if you have hawk eyes, find the number 2221 among 7221 in 15 seconds. There is 3 months by Evelyn Hartley