I dont know...
I just thought that was how math(s) worked.
Ahh... I am over thinking this. Its my fault for actually taking my Adderall today.
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
A maths question
- Thread starter Nermal
- Start date
- Sort by reaction score
I just thought that was how math(s) worked.
Ahh... I am over thinking this. Its my fault for actually taking my Adderall today.
That's your interpretation. I see the following conversation:
Car A is going 25 km/hr, but car B is going faster.
How much faster is car B going?
Answer 1) Three times.
Answer 2) Three times as fast.
You suggest that answer 1 implies 100 km/hr, while answer 2 implies 75 km/hr. I suggest that answer 1 is ambiguously worded and could be interpreted the same as answer 2.
I would have typically answered 75, whereby "x" times faster than "y" always takes "y" at a unit of 1, e.g. 3x older than 5yrs old=15.
But now you've posed an alternative universe, forever altering my basic math, and testing the very limits of my grasp of reality. Back to the martini.
But now you've posed an alternative universe, forever altering my basic math, and testing the very limits of my grasp of reality. Back to the martini.
Everyone who learns English in the British tradition says "maths." Because mathematics is plural. Like if you refer to more than one automobile, you say, "autos." But whatever... that's crazy English talk. And all them kiwis and ozzies.
It's not math involved here - it's marketing!
You let the consumer draw their own conclusions
My point is that you shouldn't pick apart "errors" in language when you're from a country that speaks a variant of that language.
No. It's 5/6 times slower.
Edit: Hmm, if I enter 150 * 5 / 6 into Calculator, I get 125, but if I enter 5 / 6 * 150 then I get 124.9999999995, surely it's not supposed to do that
Edit: Hmm, if I enter 150 * 5 / 6 into Calculator, I get 125, but if I enter 5 / 6 * 150 then I get 124.9999999995, surely it's not supposed to do that
No. It's 5/6 times slower.
Edit: Hmm, if I enter 150 * 5 / 6 into Calculator, I get 125, but if I enter 5 / 6 * 150 then I get 124.9999999995, surely it's not supposed to do that
It's a simple order of operations issue.
In the first instance the calculator program does 150*5 = 750
750/6=25...
The second one is 5/6 = 0.8333333...
0.8333333....*150 - 124.9999999995
Not necessarily an error just the fun of rounding a repeating decimal that is not necessary in the first calculation.
ok i think we can all agree oon the following
if it said 3x as fast then the answer is 75
if it says 3x faster the answer is 100 (as its going 25 plus 3*25=100)
if it said 3x as fast then the answer is 75
if it says 3x faster the answer is 100 (as its going 25 plus 3*25=100)
But why is Calculator rounding things in the first place? I can do 5 / 6 * 150 on my Sharp calculator and get 125.
Depends on the number of digits held in the decimal representation of 5/6 or if the calculator is "smart" enough to re-order the operations. My guess would be that the Sharp calculator probably works it's magic carrying more digits while Calculator is probably limited to IEEE standards since it's run on a more generic processor.
or the Sharp may carry fewer digits and 124.99999999999....5 rounds up earlier in the Sharp....
or Calculator truncates rather than rounds.....
it's not uncommon for the order of operations to matter when dealing with infinite decimals or extremely large or small numbers.
No. It's 5/6 times slower.
Edit: Hmm, if I enter 150 * 5 / 6 into Calculator, I get 125, but if I enter 5 / 6 * 150 then I get 124.9999999995, surely it's not supposed to do that
If do 5 / 6 * 150 = in calculator or the dashboard calculator I get 125. (?)
