Triangular Logic

Which number should replace the question mark?

Triangular Logic




Similar Riddles

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Asked by Neha on 24 Sep 2025


Why did the Girl throw the butter out of the window?

Asked by Neha on 19 Aug 2024

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

Asked by Neha on 13 Jun 2026


Our product and our sum always give the same answer. Who are we?

Asked by Neha on 11 Oct 2021

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Asked by Neha on 28 Dec 2023

What is common among 11, 69, and 88?

What is common here

Asked by Neha on 15 Sep 2023


You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

Asked by Neha on 11 Apr 2025

You were playing ping pong with your friend. Suddenly the ball fell into a narrow metal pipe that was imbedded in the concrete surface of the floor one foot deep. Now you don't have any other ball and you desperately want to take it out and play. You and your friend have your shoelaces, your tennis paddle and a plastic water bottle. However, the bottle cannot fit into the pipe.

How will you take the ball out?

Asked by Neha on 23 Jun 2026

What is the next number in this series?

4,12,84,3612....

Asked by Neha on 18 Mar 2023


Who has married many women but was never married?

Asked by Neha on 09 Aug 2025

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Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.