What is so fragile that saying its name breaks it?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

Who has married many women but was never married?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Looking at the figure given, you will find a square formed with match sticks. This figure comprises five squares. Can you move the matchsticks such that the resulting figure consists of ten squares? Please note that you can drag the matchsticks can't rotate them and have just four moves. How will you do it?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?