The Mathematics Thread

[Pushka]

Re: The totally off-topic thread

That's the answer!

Here's link to article where the puzzle was reported:

Flower maths puzzle sparks debate | Daily Mail Online

And that is one of those links I hate. Flicks off after a nanosecond. And this is why I hate maths.

 

[JessicaTam]

Re: The totally off-topic thread

And that is one of those links I hate. Flicks off after a nanosecond. And this is why I hate maths.

Then you probably would not have enjoyed my trip to the HKG Science Museum today. The bottom floor had lots of maths related activities.

 

[medhead]

Re: The totally off-topic thread

The number of petals thing is nonsense, since that isn't a consistent rule. The "equations" are about adding a whole flower, not individual parts of the flower. The answer is not solvable, as all assumptions about the value of the 4 petal blue flower must be valid. Or perhaps 1+20x[4 petal blue flower].

 

[JohnK]

Re: The totally off-topic thread

Agreed. Silly puzzle. Answer is 101.

 

[TheRealTMA]

Re: The totally off-topic thread

Agree with MedHead, the puzzle as shown is unsolvable. The answer should be 1+20x[4 petal blue flower] by precedence of mathematical operators, but as shown the image is nonsense, as are most of these silly primary school mathematics puzzles. Juts like the fellow who wrote the book on maths and puzzles and said tribes in deepest darkest South America never had a system of arithmetic that counted past 4. Bollocks.

 

[Quickstatus]

Re: The totally off-topic thread

Favour please:

Future value of an investment after compound interest is described:

A=P(1+r/n)[SUP]nt[/SUP]

A= future value
P=principal
r=interest rate
n=number of periods interest is credited per year
t=number of years

I want to calculate the future value of that investment if I also make regular payments of the same amount at the beginning of the month compared with at the end of the month

Can anyone please assist with a mathematical formula

 

[TheRealTMA]

Re: The totally off-topic thread

Favour please:

Future value of an investment after compound interest is described:

A=P(1+r/n)[SUP]nt[/SUP]

A= future value
P=principal
r=interest rate
n=number of periods interest is credited per year
t=number of years

I want to calculate the future value of that investment if I also make regular payments of the same amount at the beginning of the month compared with at the end of the month

Can anyone please assist with a mathematical formula

Try this

Future Value of Periodic Payments Calculator - High accuracy calculation

 

[Quickstatus]

Re: The totally off-topic thread

Thanks.

....(1+r/n).....

Hate it when you know something missing but dont want to go back to first principles to work it out.

 

[TheRealTMA]

Re: The totally off-topic thread

Thanks.

....(1+r/n).....

Hate it when you know something missing but dont want to go back to first principles to work it out.

GIYF, mate. GIYF.

 

[RooFlyer]

@MathNerd ... care to re-invigorate this thread?

 

[MathNerd]

@MathNerd ... care to re-invigorate this thread?

Haha, this thread pre-dates my joining of this wonderful site, no wonder I haven't come across it before.
Anything in particular you'd like me to cover?

 

[RooFlyer]

An alternative way to prove Fermat's last theorem?

Or, whatever crosses your mind.

 

[MathNerd]

Or, whatever crosses your mind.

An engineer and a mathematician enter a room. This is the final stage of their respective examinations/tests in order to progress to the next stage in their careers.
The room is windowless and has a single door on the opposite side to where they entered.
About 30 seconds after entering, a gorgeous woman exits from this opposite door, holding a key. She says "this key is available for the taking, however I have one rule: you can only move towards me using jumps, each jump having a length of exactly half of the distance between you and me".
The mathematician sighs, lets out a big groan and crouches down, saying it's impossible to get the key.
The engineer lights up, and starts jumping. The mathematician says "hey, you'll be jumping forever and ever and never reach her!". The engineer, with a massive smirk on his face, looks back and says "I'll be close enough, for all practical purposes".