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IMSO 2005 Mathematics - International Short Answer Question 11

IMSO Maths · IMSO 2005 Mathematics - International Short Answer

Question 11

Andy multiplies the first fifty whole numbers: $1\times2\times3\times\cdots\times50$. Counting from the right, what is the position of the first non-zero digit? For example, in 205000, the position of the first non-zero digit from the right is 4.