How many triangles can you find in this given picture?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What makes this number unique: 8,549,176,320?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?

If you say my name, I will no longer exist. What am I?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Can you name some countries which do not have the alphabet 'A' in them?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What number when divided in half becomes zero?

John, a 5-year-old boy, was really fond of the chocolates. He asked his Mother to give him some money to buy his favourite chocolates. His Mother gave him $45. He went to the shopkeeper and asked, "How much is one chocolate for?". The shopkeeper said $3 for one chocolate. Also, if you give me the wrappers of three chocolates, I will give you one for the exchange.
In total, how much chocolate could John eat?