What is the largest number you can write with just 3 digits?

Why do we preferably have round manhole covers and not square ones?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

What is so fragile that saying its name breaks it?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

What is the longest word in the dictionary?