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Complete the missing letters of the given word.

How many sides does a circle have?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Can you find the thief by just looking at the picture below?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Replace the question mark with the correct number.

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?