Before Mount Everest was discovered, what was the highest mountain in the world?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

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?

John was piloting a plane behind a car but was never able to overtake it. Why?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

A letter is hidden in the image in plain sight. Can you spot it in 6 seconds? Test your eye power now!

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Readers with excellent focus can find three differences between the camping scene pictures in 16 seconds. Can you? Test your eye power now!