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VTMO 2026 - Grade 9 - Semifinal - SET 05 - Self-study Question 1

VTMO · VTMO 2026 - Grade 9 - Semifinal - SET 05 - Self-study

Question 1

The product of five distinct odd primes is a five-digit number $\overline{abcab}$ with $c=0$. How many such sets of five primes exist?