My location can be determined by the below rebus.
So where am i ?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Be active and find the killer in the picture Riddle below.

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Using eight eights and addition only, can you make 1000?

Next Number in the Series,

5, 16, 49, 104, ?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

Why is 6 afraid of 7?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?