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Started By
Message
Need some math help
Posted on 12/29/17 at 6:00 pm
Posted on 12/29/17 at 6:00 pm
:inb4treefiddy:
Start with a penny day one, double it on day two, double on day three, double it day four (15 cents as of day 4)
What's the total (or formula) for 365 days?
Start with a penny day one, double it on day two, double on day three, double it day four (15 cents as of day 4)
What's the total (or formula) for 365 days?
20
Posted on 12/29/17 at 6:02 pm to theantiquetiger
The number would be too big to comprehend.
You have 2^30 pennies after a month.
2^364 pennies after a year. *corrected (credit to slackster)
You got this from your High School class, huh?
You have 2^30 pennies after a month.
2^364 pennies after a year. *corrected (credit to slackster)
You got this from your High School class, huh?
This post was edited on 12/29/17 at 6:19 pm
Posted on 12/29/17 at 6:02 pm to theantiquetiger
Your kid suckered you into this and now you’re having second thoughts huh?
Posted on 12/29/17 at 6:03 pm to theantiquetiger
I'm not doing your homework for you
Posted on 12/29/17 at 6:04 pm to Pectus
I know it will be greater than the national debt, just wondering what the answer is
Posted on 12/29/17 at 6:04 pm to Pectus
quote:
2^365 pennies after a year.
2^364 after a year.
Posted on 12/29/17 at 6:04 pm to SidewalkDawg
quote:
Your kid suckered you into this and now you’re having second thoughts huh?
Posted on 12/29/17 at 6:05 pm to theantiquetiger
quote:
By day #18 the doubling penny is now worth $1,301.72. By day #28 we're well over a million dollars at $1,342,177.28. And by day #31 – as promised – we've crossed the $10 Million mark at a staggering $10,737,418.23
Posted on 12/29/17 at 6:05 pm to theantiquetiger
I did it on Excel once, I aint doing it again.
Posted on 12/29/17 at 6:05 pm to theantiquetiger
A frick ton. I just did it on Excel and can't count that high.
Posted on 12/29/17 at 6:05 pm to slackster
2^364 + 1
Posted on 12/29/17 at 6:08 pm to theantiquetiger
A really, really big fricking number.
Posted on 12/29/17 at 6:09 pm to slackster
On the last day, you will put $375,766,813,244 with 98 zeros behind it
Posted on 12/29/17 at 6:09 pm to theantiquetiger
288
Posted on 12/29/17 at 6:09 pm to ell_13
quote:
2^364 + 1
Is it? I'm thinking about how much you'd pay/receive on that 365th day. On the 2nd day you'd receive 2 pennies, or 2^1. On the first day you'd receive 1 penny, or 2^0.
The formula for the amount on any given day is 2^(n-1).
Posted on 12/29/17 at 6:10 pm to theantiquetiger
3.7577E+109
Posted on 12/29/17 at 6:11 pm to ell_13
quote:
Message
Need some math help by ell_13
2^364 + 1
That's just the last day correct?
Wouldn't it be 1+(2^1)+(2^2)+(2^3)...(2^364)?
Posted on 12/29/17 at 6:12 pm to slackster
quote:
2^(n-1)
That's the winner.
Posted on 12/29/17 at 6:14 pm to theantiquetiger
quote:
Start with a penny day one, double it on day two, double on day three, double it day four (15 cents as of day 4)
If you need the cumulative amount of pennies you'd have after 365 days, it would be 2*(2^364) - 1, or (2^365)-1.
The cumulative amount of pennies after n days is (2^(n))-1. I'm putting extra parenthesis for our order of operations illiterate friends.
This post was edited on 12/29/17 at 6:17 pm
Posted on 12/29/17 at 6:15 pm to theantiquetiger
Thanks. After clicking this thread, my suggested ads are all about, 'How far donating a penny a day goes.'
This post was edited on 12/29/17 at 6:16 pm
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