What occurs twice in a week, once in a year but never in a day?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

How many bananas can you eat if your stomach is empty?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?