QUIZ: Try your hand at recreational math

QUESTION 1: Two prime numbers add up to 103. What are the numbers?

QUESTION 2: The numbers 1-9 are placed in the following so-called magic square. Each row, column and diagonal in the square adds up to the same sum. This sum is known as the magic number of the square. A few of the numbers are missing. What is the magic number of the square?

Fill in the blank: Type your answer in the box and then click “Check”.

QUESTION 3: Suppose there are only two kinds of people: liars and truth-tellers. Liars lie all the time and truth-tellers always tell the truth. Both liars and truth-tellers will answer ‘yes’ to the following question: “Are you a truth-teller?”. Suggest a question that you can ask where the truth-teller will answer ‘yes’ and the liar will answer ‘no’.

QUESTION 4: A farmer had 30 chickens. Some of them had 2 legs and some had 3. Altogether the farmer counted 72 legs. How many chickens had 3 legs?

QUESTION 5: What is the length of the third side of the following triangle, given that it is the smallest side? The triangle is not drawn to scale.

QUESTION 6: Match the Roman numerals with the corresponding numbers.

QUESTION 7:  Move only 2 sticks to make a correct equation.

QUESTION 8: Rank the skiers from 1st to 10th place in this slalom race at the world championship.