In which direction should the missing arrow point?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

What does this rebus means ?

PROG WORKRESS

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

Can you find out the number that should replace the question mark with a valid reason?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?