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TIMO 2017 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 5 Question 3

TIMO · TIMO 2017 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 5

Question 3

Primes $x,y$ satisfy $x^2-y^3=1$. Find $x+y$.
  1. 3
  2. 4
  3. 5
  4. 6