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VTMO 2021 — Grade 7 — vtmo Question 9

VTMO · VTMO 2021 — Grade 7 — vtmo

Question 9

$A$ is the set of primes less than $10$. How many isosceles triangles have all side lengths in $A$?
  1. $10$
  2. $11$
  3. $12$
  4. $13$
  5. $14$