9

Answers
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5
Most interesting mathematics mistake?
2
How to respond to “I was never much good at maths at school.”
2
Existence of a zero-sum subset
2
Best way to teach concept of real numbers using a hands-on activity?
1
Is the product of first $n$ prime numbers $+1$ another prime number?
0
Defining ‘free monoid’ without Nat?
2
“Plateaus” to watch out for
-1
How to see the ring of all polynomials (with integer coefficients) that are bounded on a given real algebraic set?
0
For which integers u,v does au=bv *approximately*?