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MYTS 2018 — Grade 6 — Round 1 Question 8

MYTS · MYTS 2018 — Grade 6 — Round 1

Question 8

Let $A=10\times11\times\cdots\times99$. Reverse the tens and units digits of every factor to get $B=01\times11\times21\times\cdots\times99$. Find $A/B$.

Question illustration