Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I know a nine-letter word having only one vowel.
Do you ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What does below Rebus say?

XLR8

Why do we preferably have round manhole covers and not square ones?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?