Can you calculate the probability of getting a sum of six when a dice is thrown twice?

How do you go from 98 to 720 using just one letter?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?