Riddle #10

Every night I'm told what to do, and each morning I do what i'm told. But I still don't escape your scold.

Can you write number 45 using only the number 4?

You always serve it, but nobody can ever eat it. What is that?

I eat other animals. I have a big mouth. I am green. I live in the water. Who am I?

I am in a land where thirty men and two women were dressed in classic black and white dress. They began to fight as soon as any of them moves. Where am I ?

Would you have more money with a million dollars today or a penny today and double your money every day for 30 days?

You will throw me away when you want to use me. You will take me in when you don’t want to use me. What am I?

What is unusual about the following words: revive, banana, grammar, voodoo, assess, potato, dresser, uneven?

In a new Engineering Hostels they have 100 rooms. Ankit Garg was hired to paint the numbers 1 to 100 on the doors. How many times will Ankit have to paint the number eight ?

You are standing next to three switches. You know these switches belong to three bulbs in a room behind a closed door – the door is tight closed, and heavy which means that it's absolutely impossible to see if any bulb is on or not. All three switches are now in position off. You can do whatever you want with the switches and when you are finished you open the door and go into the room. While in there you have to tell which switch belongs to which bulb. How will you do that?

How could the cowboy travel on friday, then sleep two days and then travel back home on friday.