Can you count the number of triangles in the given figure?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

A crime was committed at baker street. Ibrahim Dakota who was shot in the stomach was the main suspect. Sherlock questioned the suspect. The conversation started as:
Sherlock: What's your story, Ibrahim?
Ibrahim: I was walking around baker street and suddenly a man from the back shot me. I ran as fast as I could to save my life".
Sherlock: That is enough (and ask the police to arrest him).

Why does Sherlock think he is the murderer?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I shave every day, but my beard stays the same. What am I?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What demands an answer, but asks no questions