Aqa Maths Non Calculator Watch

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gemgems89
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#61
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#61
(Original post by davidt)
You won't loose 4 whole marks, unless you just guessed

427 is not 47/110.

Did everybody get 0.729 for the last question? (all 3 passing)
Just 0.7

Nobody passing is 0.1. 3 people = 0.3.
1-0.3 = 0.7.
I think.
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gemgems89
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#62
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#62
(Original post by Peteski)
'Twas 0.4270270270270 to my knowledge, though I'm attempting to get it out of my mind right about now.
I dont think there were any zeros in it.
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Sadako No Deshi
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#63
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#63
(Original post by gemgems89)
Just 0.7

Nobody passing is 0.1. 3 people = 0.3.
1-0.3 = 0.7.
I think.
I got 0.729, because failing was 0.1. So, passing was 0.9. So, three people passing was 0.9x0.9x0.9. I hope that's right.
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Mr. Fox
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#64
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#64
OK, tell me if I'm wrong, but in the last question, the chance of failing in both tests was 1/10 (1/4 x 4/10). If 3 people do it, the chances of them failing every time is 0.1 x 0.1 x 0.1 = 1/1000? OH ****, I just realised I answered with the chance of a failure each time. So the chance of all three being successful was 999/1000?
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Gregorian IV
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#65
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#65
(Original post by staylor)
Seriously everybody found it hard :eek:?

It was easy (or as much as a higher tier paper can be expected to be). Seriously, I answered all the questions eventually, and cant think of any that I felt I had done wrong. It was all at least reasonable - vectors, graphs factorising, cylinders, probablilty - the lot!

I did get 0.75t+0.25s whoever asked (for the vectors).

Looky here S(andy) Taylor. Since you are a boy genius you will have found it easy. However, most found it hard. My head nearly spontaneously combusted in that exam
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staylor
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#66
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#66
(Original post by davidt)
You won't loose 4 whole marks, unless you just guessed

427 is not 47/110.

Did everybody get 0.729 for the last question? (all 3 passing)
I did


To answer everyone else, no I do believe that the recurring decimal was 0.42727272727, nothing else.

The 0.4 bit at the start was just to make it hard.
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Gregorian IV
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#67
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#67
(Original post by soulsussed)
Oh, well I know I definatly got that wrong. I pu 427/999
It don't matter. you'll still get 3 out of the 4 marks. i did same in mocks and i got 1 mark less
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staylor
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#68
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#68
(Original post by Mr. Fox)
OK, tell me if I'm wrong, but in the last question, the chance of failing in both tests was 1/10 (1/4 x 4/10). If 3 people do it, the chances of them failing every time is 0.1 x 0.1 x 0.1 = 1/1000? OH ****, I just realised I answered with the chance of a failure each time. So the chance of all three being successful was 999/1000?
I thougth that, but when multiplying the success probablilties you get 0.729. I believe 1/1000 doesnt fulill all the criteria or something.
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Pigmy Goat
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#69
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#69
It's over now!!! Just think about the calculator
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staylor
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#70
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#70
(Original post by Pigmy Goat)
It's over now!!! Just think about the calculator
Im afraid I dont hav that kind of relationship with my calculator.
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FinalFan3
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#71
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#71
(Original post by staylor)
I thougth that, but when multiplying the success probablilties you get 0.729. I believe 1/1000 doesnt fulill all the criteria or something.
I got 0.729. I thought some of the last questions were easier than some of the middleish questions!!
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soulsussed
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#72
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#72
(Original post by staylor)
Im afraid I dont hav that kind of relationship with my calculator.
Fab, make me laugh, lighten the mood - rock on man!
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FinalFan3
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#73
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#73
(Original post by staylor)
Im afraid I dont hav that kind of relationship with my calculator.
But, I love my Casio!!
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soulsussed
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#74
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#74
(Original post by Final_F)
But, I love my Casio!!
Casio's are great, I've been with mine 5 years!!
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motoroller
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#75
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#75
ok, ok, we all know it was bad, lets move on to other revision and see when we get the results.... BTW, i got 47/110 for the fraction/recurring question... and 20000-5000pi for the crate...
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davidt
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#76
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#76
Just 0.7

Nobody passing is 0.1. 3 people = 0.3.
1-0.3 = 0.7.
I think.
Chance of one person failing = 0.1

Chance of one person passing = 0.9

Chance of pass AND pass AND pass = 0.9 * 0.9 * 0.9

= 0.81 * 0.9

= 0.729
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Mr. Fox
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#77
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#77
Shizzle.
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gemgems89
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#78
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#78
(Original post by davidt)
Chance of one person failing = 0.1

Chance of one person passing = 0.9

Chance of pass AND pass AND pass = 0.9 * 0.9 * 0.9

= 0.81 * 0.9

= 0.729
Damn, think i could get any marks for 0.7? Cos it's close... lol
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Narsha
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#79
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#79
(Original post by staylor)
Not as I see it im afraid.

The recurring decimal was 0.42727272727...

Remember the '4'

Let the decimal = x

1000x = 427.272727272727...
990x = 423
It must be 990 to get rid of the four (10x = 4.27272727...)

x = 423/990
x = 141/330


x = 47/110

Thats what I get.
Yeah you're right.
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Narsha
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#80
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#80
(Original post by davidt)
You won't loose 4 whole marks, unless you just guessed

427 is not 47/110.

Did everybody get 0.729 for the last question? (all 3 passing)
yeah it is.
(0.42727272727 x 1000)-(0.42727x10)=423
423/990=141/330=47/110
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