Count the number of triangles in the below picture?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

What can you catch but never throw?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Why is the Hole below a Lock?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?