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

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

In the given picture, in how many ways can you read the word "Tiger"?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?