Brain Teasers and Logic Puzzles

This is a classic riddle. If 'all but 9' die, it means that 9 sheep survived. The 8 that died are gone, leaving exactly 9 living sheep remaining on the farm.

This is a trick question - Noah built the ark, not Moses. Moses is associated with the Exodus story, not the flood narrative in Genesis. Since Moses wasn't involved with any ark, the answer is zero.

A dozen is defined as a group or set of twelve. The value of the stamps (two cents) is irrelevant to the quantity; twelve stamps make up a dozen stamps.

You take the first pill at 0 minutes, the second pill at 30 minutes, and the third pill at 60 minutes. Therefore, the total time elapsed from the first pill to the last is 60 minutes. A common mistake is to multiply 3 by 30.

The phrase 'all but 9 die' means 9 survive. If all except 9 die, then those 9 are still alive. This is a language trick question, not a math problem.

This is a trick question - Noah, not Moses, built the ark and took animals. Moses never had an ark. The correct answer is 0 because the question premise is wrong.

A 'dozen' is a standard unit of measurement meaning twelve. Regardless of the value or denomination of the stamps (two cents, five cents, etc.), a dozen of them will always count exactly twelve items.