# Re-define currency denominations

**URL:** <https://boards.straightdope.com/t/re-define-currency-denominations/769691>\
**Category:** In My Humble Opinion\
**Created:** [October 25, 2016, 4:28pm UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691 "2016-10-25T16:28:38Z")\
**Posts on this page:** 10\
**Page:** 5

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**Author:** ![even\_sven](https://avatars.discourse-cdn.com/v4/letter/e/dfb087/32.png) [@even\_sven](https://boards.straightdope.com/u/even_sven)\
**Post date:** [October 28, 2016, 12:57am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/81 "2016-10-28T00:57:44Z")

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Coins are $.25 and $1.00.

Bills are $5, $20 and $100.

Easy.

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**Author:** ![Lemur866](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lemur866/32/434_2.png) [@Lemur866](https://boards.straightdope.com/u/Lemur866)\
**Post date:** [October 28, 2016, 1:08am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/82 "2016-10-28T01:08:54Z")

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I know we’re attached to quarters.

But if you’ve got bills in $5, $20 and $100, you might as well have symmetrical coins of $0.05, $0.20, and $1.00. And only issue nickels as collectors items, and make them 2 inches in diameter, and sell them for $5.

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**Author:** ![LSLGuy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lslguy/32/5813_2.png) [@LSLGuy](https://boards.straightdope.com/u/LSLGuy)\
**Post date:** [October 28, 2016, 2:08am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/83 "2016-10-28T02:08:09Z")

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@ **septimus** : I was wondering about the generative rule.

I quickly noted that {27, 14, 3} was {9_3-2, 9_2-4, 9\*1-6}. The factor sequences {3, 2, 1} and {2, 4, 6} seem suggestive. I also thought that multiples of nine was a generally fruitful region to look for interesting repeating additive/subtractive behaviors.

But after that I crashed into a wall of laziness and ignorance. I’m lacking the analytic tools to make anything smarter than a brute force search.

Care to throw me/us a bone?

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**Author:** ![septimus](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/septimus/32/410_2.png) [@septimus](https://boards.straightdope.com/u/septimus)\
**Post date:** [October 28, 2016, 2:13am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/84 "2016-10-28T02:13:02Z")

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> [@LSLGuy](#):
>
> @ **septimus** : … I’m lacking the analytic tools to make anything smarter than a brute force search.

I’m in the same brutal boat as you.

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**Author:** ![Peremensoe](https://avatars.discourse-cdn.com/v4/letter/p/ce7236/32.png) [@Peremensoe](https://boards.straightdope.com/u/Peremensoe)\
**Post date:** [October 28, 2016, 2:44am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/85 "2016-10-28T02:44:20Z")

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> [@Mangetout](#):
>
> I like the way it (UK Sterling) works right now, so I’d reinvent that.
> 
> That is, denominations in multiples of 1, 2, 5 only - no exceptions for quarters or five-sixteenths
> 
> [ul]  
> [li]1, 2 and 5 pence[/li][li]10, 20 and 50 pence[/li][li]1, 2 and 5 pounds (I might bring back the pound note, or replace the fiver completely with a coin)[/li][li]10, 20 and 50 pounds[/li][li](if required) 100, 200 and 500 pounds[/li][/ul]

Drop the small-pence, and this is mathematically the same as what I offered upthread (in terms of USD, but that doesn’t matter).

People who think denominations like 2 and 50 aren’t useful, have just never got good at using cash.

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**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\
**Post date:** [October 29, 2016, 7:42pm UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/86 "2016-10-29T19:42:35Z")

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> [@Peremensoe](#):
>
> Drop the small-pence

I see a lot of support for the notion of dropping the smaller denominations, but I think they’re still useful - you know, for kids.

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**Author:** ![Dewey\_Finn](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/dewey_finn/32/4222_2.png) [@Dewey\_Finn](https://boards.straightdope.com/u/Dewey_Finn)\
**Post date:** [October 29, 2016, 7:46pm UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/87 "2016-10-29T19:46:28Z")

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Most of the children I know are smart enough to realize that they can’t buy anything with the “small-pence” or the US equivalents.

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**Author:** ![Northern\_Piper](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/northern_piper/32/5304_2.png) [@Northern\_Piper](https://boards.straightdope.com/u/Northern_Piper)\
**Post date:** [October 31, 2016, 2:05am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/88 "2016-10-31T02:05:31Z")

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The Canadian government has reviewed the status of the nickel, but is keeping it … for now.

> **[First the penny, now the nickel? Ottawa mulls future of 5-cent coin | CBC News](https://www.cbc.ca/news/business/nickel-penny-canadian-mint-1.3821804)**
>
> An internal federal analysis shows the government has studied the pros and cons of the nickel — but Ottawa insists it has no plans to force the five-cent coin into retirement, as it did the penny.

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**Author:** ![Siam\_Sam](https://avatars.discourse-cdn.com/v4/letter/s/d78d45/32.png) [@Siam\_Sam](https://boards.straightdope.com/u/Siam_Sam)\
**Post date:** [October 31, 2016, 2:10am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/89 "2016-10-31T02:10:21Z")

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I’d have 95- and 99-cent coins.

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**Author:** ![Isamu](https://avatars.discourse-cdn.com/v4/letter/i/7c8e57/32.png) [@Isamu](https://boards.straightdope.com/u/Isamu)\
**Post date:** [October 31, 2016, 2:47am UTC](https://boards.straightdope.com/t/re-define-currency-denominations/769691/90 "2016-10-31T02:47:09Z")

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And a tree-fitty.

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