What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

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

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?