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

Which tank will fill first?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

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

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Why despite killing dozens of people Charley and Wilma were not punished?