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

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Give it food and it will live; give it water and it will die.

Which is faster, Heat or Cold ? Explain.

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Which alphabet letter is a question?

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?

Count the number of triangles in the given picture.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99