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    Ask Math Anything Topics from May 2020

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    • debbieD
      debbie ADMIN M0★ M1 M5
      last edited by

      Wed 5/20/20 Live stream topics

      • The millennium prize problems
      • Could you please help us understand the values of negative \(n\)?
      • What was that ringing in the background?
      • Given \(n\) married couples, how many ways are there to form pairs consisting of one man and one woman who are not a couple?
      • Any tips for solving combinatorics problems generally?
      • Can you recite \(\pi\) to 100 digits?
      • What is your guidance for students who want to pursue research in math in the future?
      • If I don't like math, should I continue doing it?
      • I like non-routine math, but it takes time, and school doesn't allow that!
      • Why is math related to coding?
      • Do you think that one day, calculus will be taught in elementary school?
      • Could you explain the connection between sine in triangles and sine in waves and phenomena like sound?
      • Can you give some tips for solving geometry problems?
      • Do waves actually look like the sine function?
      • Is it possible to make a super fast bicycle using gear ratios?
      • Is it possible to make a super SLOW bicycle using gear ratios?
      • Is it possible to multiply \(\pi\) with an integer and get a rational number?
      • \( \frac{17}{21} \) vs. \(\frac{43}{50}\)
      1 Reply Last reply Reply Quote 1
      • debbieD
        debbie ADMIN M0★ M1 M5
        last edited by

        Thu 5/21/20 Live stream topics

        • Area of an equilateral triangle
        • Fraction of area used up by cookie dough if cookie are cut out of a rolled-out sheet of dough
        • In how many ways can we arrange a six-digit number such that it is non-decreasing?
        • Are there more irrational numbers or rational numbers?
        • How do you prove Heron's Formula?
        • Are there more composite numbers or prime numbers?
        • How can we find the radius of three circles with a triangle making a point at each center, where the triangle sides are 16, 18 and 20?
        • \( (A-X)(B-X)(C-X) \times \ldots \times (Z-X)= ?\) (MATHCOUNTS Countdown Round)
        • What is your key piece of advice for succeeding in Calculus, or any complex mathematics study?
        • Do you have a floating keyboard?
        • What is the probability of getting a perfect score on the SAT by guessing every answer?
        • How long did it take for you to code the program for this live stream?
        • Pick any number. If that number is even, divide it by 2. If it's odd, multiply it by 3 and add 1. Now repeat this process with your new number. If you keep going, you'll eventually end up at 1. Why?
        • If you know how to draw an icosahedron, do you know how to draw an icosahenagon (with 21 sides)?
        1 Reply Last reply Reply Quote 1
        • debbieD
          debbie ADMIN M0★ M1 M5
          last edited by debbie

          Fri 5/22/20 Live stream topics

          Mustang Math Tournament

          • Why is \(\sqrt{2}\) so useful?
          1 Reply Last reply Reply Quote 1
          • debbieD
            debbie ADMIN M0★ M1 M5
            last edited by

            Sat 5/23/20 Live stream topics

            • How does COVID affect global warming?
            • How to make a very slow rocket
            • Do you have any number theory tips?
            • How tall are you in feet?
            • Is it possible that Star Wars or Star Trek could be real?
            • What stylus do you have?
            • Did you get a scholarship at Cambridge?
            • Can you please make a coding video or talk about some coding?
            • Why is number theory so hard?
            • Do you think stopping time is possible?
            • How long have you been a professor?
            • Where do you get working code?
            1 Reply Last reply Reply Quote 1
            • debbieD
              debbie ADMIN M0★ M1 M5
              last edited by

              Mon 5/25/20 Live stream topics

              • \( n^2 + 6n = x^2.\) Find all solutions for \(n\) if BOTH \(n\) and \(x\) are integers.
              • How to explain the fourth dimension
              • What's a good password that is unhackable?
              • What is 1% of 2% of 3% of 4% of 5% ... of 100% of 10000?
              • Create a row of 6 squares. Place \(X, Y,\) and \(Z\) in the first 3 squares respectively. You have to move them to the last 3 squares only by moving letters one space to the right. Find the total number of ways to do this. (2017 CEMC Waterloo Caley Contest Problem #24)
              • 3-D version of a Catalan number problem
              • Did you have a personal math teacher when you were younger, or did you study math on your own?
              • Are fingerprint passwords good?
              • How should I prepare for AOIME?
              • Do you have experience with machine learning calculus?
              • \( \frac{d}{dy} y^6 = 6y^5 \)
              1 Reply Last reply Reply Quote 1
              • debbieD
                debbie ADMIN M0★ M1 M5
                last edited by

                Tue 5/26/20 Live stream topics

                • Show that the next to last digit of \(3^n\) is always even.
                • The next to last digit of \(9^n\)
                • Binomial Coefficients and Pascal's Triangle
                • Have you looked at your Wikipedia page? Is the information there accurate?
                • Prove that powers of 5 have 2 as the second-to-last digit
                • How long would it take you to solve 6 IMO problems?
                • What is the smallest integer that you add to \( 2018 \times 2019 \times 2020\) to make it a cubic number?
                • If \( \frac{m+1}{m} = 9,\) then what is \(m^2 + \frac{1}{m^2}?\)
                • Prime factorize \(9991\) as the product of \(2\) primes
                • Have you ever met Eddie Woo?
                1 Reply Last reply Reply Quote 1
                • debbieD
                  debbie ADMIN M0★ M1 M5
                  last edited by debbie

                  Wed 5/27/20 Live stream topics

                  • I have a broken calculator. If you type 39 it gives 12; if you type 98, it gives 17; if you type 54, it gives 92, and if you type 28, it gives 11. What does 53 give?
                  • Can you prove that the Earth is round when no matter how much you walk, it still looks flat?
                  • If multiplication is repeated addition, what does \( 0.1 \times 0.1\) mean in those terms?
                  • How would the world be different if sound were at the same speed as light?
                  • What is a probability that here on the chat there are two people who have the same birthday?
                  • A large cube that is 5 cm by 5 cm by 5 cm, is painted orange on all six faces. Then it is cut into 125 small cubes, each 1 cm by 1 cm by 1 cm. How many of the small cubes are not painted orange on any face?
                  • Three points, O(0,0), A(21,0), and C(0,21) are in a Cartesian coordinate system. Find the number of points interior of triangle OAB having only integer coordinates.
                  • Pick's Theorem and the area of a triangle
                  • Why are there so few girls in math and science?
                  • Is NOVID going to be on Microsoft soon?
                  • Let \(n\) be a positive integer. Construct a set of \(n\) consecutive positive integers that are not prime. Are there ten consecutive composite numbers?
                  • Let \(a = \text{LCM} (2, 3, 4, 5, 6, 7, 8, 9, 10, 11).\) Then a series of consecutive composites are \(a + 2, a + 3, a + 4, \ldots, a + 11\)
                  1 Reply Last reply Reply Quote 1
                  • debbieD
                    debbie ADMIN M0★ M1 M5
                    last edited by

                    Thu 5/28/20 Live stream topics

                    • There are 30 students in a class. Carlos made 13 errors and all other students made fewer errors. Show that at least three students made the same number of errors.
                    • Pigeonhole Principle
                    • 1729 as the sum of two cubes (\(10^3 + 9^3\) and \(12^3 + 1^3\) )
                    • Simplify \( (a-1)(a+1)(a+2) - (a-2)(a+1)\)
                    • How do you tell if a fish has gone bad?
                    • If \( \text{gcd} (a,b) = 1,\) does this determine \( \text{gcd}(a,2b)\)
                    • How to make \(147\) using four \(4\)'s
                    • Factor this expression: \(24 v^2 + 10v - 6\)
                    • How do you find the average of \(\frac{-5}{3} \) and \(-4\)?
                    • What is the Collatz Conjecture?
                    • Do you have a mask?
                    • How to spend money wisely
                    • What's the formula for the sum of triangular numbers?
                    • Hockey Stick Identity
                    • Can you use math to make a good meal?
                    1 Reply Last reply Reply Quote 1
                    • debbieD
                      debbie ADMIN M0★ M1 M5
                      last edited by

                      Fri 5/29/20 Live stream topics

                      • There are \(99\) little \(2 \times 2\) squares cut out of a big \(29 \times 29\) square. Prove that it is always possible to cut out one more \( 2 \times 2\) square from the big square.
                      • What is the base \(5\) version of 110010? (110010 is in base 10)
                      • Change 314159 to base 7
                      • My parents need a new WiFi router; which one should we get?
                      • The numbers obtained by only using the digits \(1, 2,\) and \(3\) are written in ascending order: \(1, 2, 3, 11, 12, 13, \ldots.\) What is the 2022-th number in this sequence?
                      • What is the 930th number with 7 digits in 1, 2, 3?
                      • Why not monetize your channel?
                      • How do you get a life?
                      1 Reply Last reply Reply Quote 1
                      • debbieD
                        debbie ADMIN M0★ M1 M5
                        last edited by

                        Sat 5/30/20 Live stream topics

                        • Did you see the Space X launch? Do you think this will change the world?
                        • Do you think celebrities get mobs of fans at their house?
                        • How do I prepare for AOIME?
                        • Why am I getting alerts from NOVID?
                        • Which would you choose, pizza or taco or hot dog?
                        • Do you guys have mobs of people at your office?
                        • Opinions on Dyson spheres (huge megastructures that completely cover the sun and can harness its power)
                        • What do you think every human being should achieve in life?
                        • How many people have downloaded NOVID so far?
                        • What's your least favorite subject?
                        • Does learning a language help you in the future?
                        • Can you talk about how you came up with the idea of building NOVID?
                        • How to get better in math?
                        • If you could make any other app, what would you make?
                        1 Reply Last reply Reply Quote 1

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