Math questions This is a list of recently added questions about math. Which famous scientist was born on the Pi day? (March 14)Albert Einstein. 14 of March is celebrated on many schools and universities as both Pi Day and the birthday of Albert Einstein. On of the traditions is the 'Pi Pie' (pictured).Created by: globalquiz.orghard 48% Albert EinsteinAlbert Einstein4398Blaise PascalBlaise Pascal1572Isaac NewtonIsaac Newton1553all of the aboveall of the above1569scientists riddles » Which of the following is a prime number?16769023. A prime number has no positive divisors other than 1 and itself. Hence, a prime bigger than 2 cannot be even. All prime numbers bigger than 5, written in the usual decimal system, end in 1, 3, 7, or 9. Created by: Sumit Tamangaverage 66% 23882990238829901059167690231676902378013837729638377296100111723835117238351844numbers riddles » Let's say the stock price was 10 two days ago. It has dropped by 50% yesterday and raised by 50% today. What is the stock price now?7.5. Stock price was 10 two days ago. Yesterday it dropped by 50% to 5. Today it raised by 50% (of 5) to 7.5Created by: globalquiz.orgeasy 72% 1010114112.512.58937.57.558642020174economy riddles » How many possible code combinations are there for this kind of lock?10000. The possible codes are from 0000 to 9999 inclusive. There are 10 possibilities for each ring, thus there are 10*10*10*10 possible codes.Created by: Teddyhard 51% 9999994851000100065199999999351410000100004967bicycles riddles » If Earth's radius was larger by 1 meter, how much longer would its equator be?By approx 6 meters. For each circle, the length of the circumference is c=2πr. Hence, if a radius grows by 1 meter, the circumference grows by 2 π meters - no matter what the initial value of radius was.Created by: SpikeMehard 45% by approx 6 metersby approx 6 meters7174by approx 6 kilometersby approx 6 kilometers2683by approx 60 kilometersby approx 60 kilometers3249by approx 6000 kilometersby approx 6000 kilometers2606Earth riddles » How many edges does a cube have?12. A cube has six square faces, each of which has four edges - but each edge is shared with another face.Created by: globalquiz.orgeasy 79% 4420888127712121085216161235geometry riddles » How many edges does a Möbius strip have?One. The Möbius strip is a surface with only one side and only one boundary component (edge). A line drawn starting from the seam down the middle will meet back at the seam but at the "other side". If continued the line will meet the starting point and will be double the length of the original strip.Created by: globalquiz.orgeasy 73% oneone8650twotwo2123threethree542fourfour443mathematics riddles » Typically, how many leap years are in a century?24. The Gregorian Calendar omits 3 leap days every 400 years, omitting February 29 in the 3 century years (integer multiples of 100) that are not also integer multiples of 400. For example, 1600 was a leap year, but 1700, 1800 and 1900 were not. Similarly, 2000 was a leap year, but 2100, 2200, and 2300 will not be.Created by: ex-terminatorhard 43% 202010002424459125254416100100465calendar riddles » Augustus was born on 1 January 10BC. Which birthday did he celebrate at 1 January 10AD?19. There was no year number zero. There were only 1999 years between 1000BC and 1000AD.Created by: Gizem İsmailoğluvery hard 39% 1919493020204523212124158080718ancient history riddles » Play mathematics quiz and see all the questions.