There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

During which month do people sleep the least?

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?

A bomb exploded in a room full of married couples and no one died. How?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

I am quite hot but become too cold if you remove the first two letters. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209