I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

O_er_t_o_

Complete the missing letters of the given word.

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

There was an aeroplane crash, every single person died, but two people survived. How is this possible?