I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How can you make number one disappear by adding something to it?

In which direction should the missing arrow point?

What is the coolest letter in the alphabet?

In the image given, you can find several triangles. Can you count them all?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

What happened when the wheel was invented?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

During which month do people sleep the least?