You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

What is the next number in this series?

4,12,84,3612....

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What have one eye but still cannot see?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

A leopard is hiding in plain sight in the bushes. Only the sharpest eyes can spot the elusive cat. Can you? Test your eye power now!

Readers with the highest levels of visual skills can find three differences between the pictures of a lion on a scooter. Test your visual prowess now!

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?