Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

What is the coolest letter in the alphabet?

Count the number of triangles in the picture below:

What occurs twice in a week, once in a year but never in a day?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

When it's bad luck to meet a black cat?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

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.