Jokes

[L Austin France]

so are you computer geeks gonna keep this knowledge within your own little club or are you prepared to share with us Luddites, ie Me?

[exile]

Well I ain't got a clue wot yer on about so please do explain

Octal 31 converted to decimal, is 25.
Dec 25 is short for Decimal 25 ergo Oct 31 = Dec 25.

Still ain't got a clue

Octal counting is based on counting in eights
so
1 2 3 4 5 6 7 Then 10 followed by 11 12 and so on.

So, if you are still following, 31 in octal is 3 x 8 = 24 plus the 1 = 25

Decimal counting is what we all do every day. So dec 25 is as we all use number 25.

PS not a computer geek - far from it in fact.

[L Austin France]

Octal 31 converted to decimal, is 25.
Dec 25 is short for Decimal 25 ergo Oct 31 = Dec 25.

Still ain't got a clue

Octal counting is based on counting in eights
so
1 2 3 4 5 6 7 Then 10 followed by 11 12 and so on.

So, if you are still following, 31 in octal is 3 x 8 = 24 plus the 1 = 25

Decimal counting is what we all do every day. So

PS not a computer geek - far from it in fact.

The "So, if you are still following" & "Decimal counting is what we all do every day" comments are very patronising to someone simply asking for assistance, & don't help in the slightest.
Did you miss the 0 (zero) from your list to make it an octal?
None the less it would be helpfull if you explained why the 3 is multiplied by 8 & not the 1 & why "dec 25 is as we all use number 25" 'cos I don't .
If anyone else would care to explain this stuff in language this old engineer could understand I'd appreciate it but won't lose any sleep if it's not forthcoming

[niemeyjt]

Well, at primary school we learned of hundreds and tens and units

So - 25 is 2 tens plus 5 units. 2 x 10 + 5 = 25.

Well, in Octal we use eights instead of tens

So 31 is 3 eights plus 1 unit. 3 x 8 = 24 + 1 = 25

[Hotrodder]

A very useful alternative for cartoon characters that only have four fingers on each hand to count with.

[L Austin France]

Well, at primary school we learned of hundreds and tens and units

So - 25 is 2 tens plus 5 units. 2 x 10 + 5 = 25.

Well, in Octal we use eights instead of tens

So 31 is 3 eights plus 1 unit. 3 x 8 = 24 + 1 = 25

Righty O that makes sense if that's the convention.
Be helpfull to know what "Decimal counting is what we all do every day. So dec 25 is as we all use number 25" means.

[niemeyjt]

Correct - we use decimal counting every day - so today is 26 - two 10s and six 1s.

Which means less only 59 shopping days until Christmas

[L Austin France]

Correct - we use decimal counting every day - so today is 26 - two 10s and six 1s.

Which means less only 59 shopping days until Christmas

Still doesn't make sense. Folk don't say "it's dec 25" when asked the date & in any case Google says;
25 as a Decimal
decimal.info
https://decimal.info › Percent-as-a-Decimal › 25-as-a-...
25 as a decimal is 0.25 and you can multiply 0.25 by a number to get 25 percent of that number.

[exile]

Understanding decimal counting can be difficult because it is so embedded in our culture that we do it without thinking.

We have 10 digits on our hands and that forms the basis of how we count. It does not have to be like that and we could have included another 10 digits on our toes. Perhaps because of shoes, we don't but other older cultures have done so. I am lead to believe that some tribes in Papua New Guinea use a base of 40 - not sure how that works - and ancient Babylonians used a base of 60. ( Throw away useless fact - and that is why there are 60 minutes in an hour.)

When you count your fingers you start with 1 ( and not zero as you suggested I should have done in Octal counting but that is a whole different philosophical debate*).

You have confused yourself by looking at percentages on your website. Counting in decimal has nothing to do with percentages.

The key point in all of this is that 31 in octal (counting in eights) is 3 x 8 plus 1; and 25 counting in decimal ( counting in tens) is 2 x 10 plus 5. They are the same number.

* Is zero a number?

[Polarengineer]

I think the empty bar on my abacus is a zero