In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

What month of the year has 28 days?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

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

How can you write nineteen in a manner that if we take out one, it becomes twenty?

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

Can you place three balls such that the equation shown in the picture holds true?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den