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When decimal currency came to Australia in 1966 (that's exactly 50 years ago!), there were 6 coins -- 1 cent, 2 cent, 5 cent, 10 cent, 20 cent and 50 cent coins. What is the SMALLEST number of these coins you would need to make 89 cents?

 Oct 5, 2021
 #1
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six     50 20 10 5 2 2

 Oct 5, 2021

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