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

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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

How is the moon similar to a dollar?

How many Watermelons are there in the below picture?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see

Replace the question mark in the picture below.

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?