olymmath

Putnam 2011 B2

  • Session B

Let SS be the set of all ordered triples (p,q,r)(p,q,r) of prime numbers for which at least one rational number xx satisfies px2+qx+r=0px^2 + qx + r =0. Which primes appear in seven or more elements of SS?

Curated text Kedlaya Putnam archive. Quoted with source.

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