It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Replace the question mark with the number below given a simple math problem.

Count the number of squares in the picture below.

What's the only room from which no one can enter or leave

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

What does the below rebus puzzle mean?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?