I am a prime number.
The double of myself is equal to the square of me.

which number am I?

How can you tell a raw egg from a hard-boiled egg?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Keyboard words are not in alphabetical order, Why?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

How can you take 2 from 5 and leave 4?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?