Can you find out the total number of triangles in the given figure?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Rumel, A detective who was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known location, you find a note:

710 57735 34 5508 51 7718

Currently, there are 3 suspects: Bill, John, and Todd. Can you break the detective's code and find the criminal's name?

Prove that twice of ten is the same as twice of eleven.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Can it be possible to build a house that has all its four walls facing towards the South?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

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