Mixed bag
The “Logic and wits” quiz — Mixed bag. It has 25 questions in five categories: Formal logic, Sets, Probability, Graphs and routes, Combinatorics. Questions get harder as the points go up, from 100 to 500.
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Who created the earliest known systematized formal theory of logical inference?
What rule says: if P → Q and P is true, then Q is true?
What rule says: if…
In the gameWhat fallacy has the…
In the gameWhose name is attached…
In the gameSet A has 20 elements, B has 15, and 5 are shared. How many elements are in A ∪ B?
How many subsets does a 5-element set have?
Of 100 people, 60…
In the gameThree clubs have 50…
In the gameA set has 4…
In the gameA fair coin is tossed twice. What is the probability of exactly one head?
Two fair six-sided dice are rolled. What is the probability their sum is 7?
One card is drawn…
In the gameAn urn has 3…
In the gameThree doors hide one…
In the gameA tree has 7 vertices. How many edges does it have?
Who solved the classic Seven Bridges of Königsberg problem, a landmark in graph theory?
What adjective describes a…
In the gameHow many edges…
In the gameWhat is the chromatic…
In the gameIn how many ways can 5 distinct books be arranged in a row?
What minimum number of people guarantees that at least two share a birth month?
12 people each shake…
In the gameIn how many ways…
In the gameTower of Hanoi has…
In the gameAll 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.