Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Can you find the dog hidden in a group of pandas?

Which digit occurred maximum times between the number 1 and 1000?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

What is the riddle which can be asked all day with a different correct answer each time.

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?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Why is a river so rich ?