GCE 'O' Level E Maths Paper 2 Aftermath Report
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Originally posted by Vendettus:
Good, at least I've someone to die with in case my answers are wrong.
I'm rather positive that the answers are correct. :) At least for the probability one, according to the table that is drawn it should be this way. As for the CF values, by referring to the textbook, these answers should be correct.
Nevertheless, remember we've had paper 1? Don't give up hope yet. :D -
Originally posted by eagle:
can someone type out the probability question?
A bag contains 6 identical balls numbered 1, 2, 3, 4, 5 and 6. Two balls are drawn at random, one after the other, from the bag without replacement.
(i) Draw the possibility diagram to show the outcome of the draw.
(ii) Find, as a fraction in its simplest form, the probability that
(a) both balls have an even number,
(b) the sum of the numbers drawn is 8,
(c) the product of the numbers drawn is 7,
(d) at least one of the numbers drawn is a multiple of 3.
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Originally posted by eagle:
can someone type out the probability question?
A bag contains six identical balls numbered 1, 2, 3, 4, 5 and 6. Two balls are drawn at random, one after the other, from the bag without replacement.
[i] Draw the possibility diagram to show the outcome of the draw.
[ii] Find, as a fraction in its simplest form, the probability that
[a] both balls have an even number
[b] the sum of the numbers drawn is 8
[c] the product of the numbers drawn is 7
[d] at least one of the numbers drawn is a multiple of 3.
OOPS, a tad too slow. -
Originally posted by eagle:
can someone type out the probability question?
A bag contains 6 identical balls numbered 1,2,3,4,5 and 6.
Two balls are drawn at random, one after another, from the bag w/o replacement.(i ) Draw the possiblity diagram to show the outcome of the draw.
(ii) Find, as a fraction in its simplest form, the probability that(a) both balls have an even no.
(b) the sum of the numbers drawn is 8
(c) the product of the numbers drawn is 7
(d) at least one of the numbers is a multiple of 3 -
Originally posted by eagle:
can someone type out the probability question?
I typed it out but deleted it since 4 people have done it before me :P
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yea im first.
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What helpful forumers...
...lol.
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I should've just scanned the whole paper.
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A bag contains 6 identical balls numbered 1,2,3,4,5 and 6.
Two balls are drawn at random, one after another, from the bag w/o replacement.(i ) Draw the possiblity diagram to show the outcome of the draw.
(ii) Find, as a fraction in its simplest form, the probability that(a) both balls have an even no.
(b) the sum of the numbers drawn is 8
(c) the product of the numbers drawn is 7
(d) at least one of the numbers is a multiple of 3(i) Draw probability tree
(ii)
(a) 3/6 * 2/5 = 1/5
(b) Sum is 8, you have (2,6), (3,5) (5,3) (6,2)
So, 1/6 * 1/5 * 4 choices = 2/15
(c) 7 is a prime number, so only factors of 1 and 7
Probability is zero
(d) Ans = 1 - P(no mulitple of 3) = 1 - 4/6 * 3/5 = 3/5Do help confirm... I did it mental and posted it
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Originally posted by eagle:
(i) Draw probability tree
(ii)
(a) 3/6 * 2/5 = 1/5
(b) Sum is 8, you have (2,6), (3,5) (5,3) (6,2)
So, 1/6 * 1/5 * 4 choices = 2/15
(c) 7 is a prime number, so only factors of 1 and 7
Probability is zero
(d) Ans = 1 - P(no mulitple of 3) = 1 - 4/6 * 3/5 = 3/5Do help confirm... I did it mental and posted it
sama sama~ Except I drew a table. O.O
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any more questions to confirm?
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Originally posted by Theguiltshow:
Okay if I got everything right except for CF question and probability, I’ll get maximum 88 marks. Not safe
Damn…
why? you think A1 is 90% - 95% ?
I remember some teachers mentioned A1 won't be so high because they are a lot of normal stream taking the same paper with us, so they will pull down the grade (not all of them of course, some are really good).
Don't worry man, as long as your total marks > 88%, you're quite safe for A1.
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i got different form the answer
1a) 7(p-2) / p (simplify?)
7a(ii) 766 (3 sig fig)
10f(ii) a= 0, b = -22, c = 10
10(iii) Gradient of curve is more gentler
10b(i) (i draw something like the tic tag toe)
10b (a) 1/5 (b) 2/15 (c) 0 (d) 3/5
are these correct? -
Originally posted by eagle:
(i) Draw probability tree
(ii)
(a) 3/6 * 2/5 = 1/5
(b) Sum is 8, you have (2,6), (3,5) (5,3) (6,2)
So, 1/6 * 1/5 * 4 choices = 2/15
(c) 7 is a prime number, so only factors of 1 and 7
Probability is zero
(d) Ans = 1 - P(no mulitple of 3) = 1 - 4/6 * 3/5 = 3/5Do help confirm... I did it mental and posted it
I made a careless mistake. You're right for the last one. I used 2/3 * 4/5, instead of 3/5 :( Careless careless!!! :(
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haha i dont know why didnt draw the probability tree correctly. only drew for 1 ball. anyways only 1 mark haha.
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Originally posted by eagle:
(i) Draw probability tree
(ii)
(a) 3/6 * 2/5 = 1/5
(b) Sum is 8, you have (2,6), (3,5) (5,3) (6,2)
So, 1/6 * 1/5 * 4 choices = 2/15
(c) 7 is a prime number, so only factors of 1 and 7
Probability is zero
(d) Ans = 1 - P(no mulitple of 3) = 1 - 4/6 * 3/5 = 3/5Do help confirm... I did it mental and posted it
Hooray, parts (a), (b) and (c) was correct!
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Originally posted by [e].Le-V:
why? you think A1 is 90% - 95% ?
I remember some teachers mentioned A1 won't be so high because they are a lot of normal stream taking the same paper with us, so they will pull down the grade (not all of them of course, some are really good).
Don't worry man, as long as your total marks > 88%, you're quite safe for A1.
I'm quite confident for Paper 1, think I didn't lose more than 10 marks for that. Haha no la, I know it won't be that high but losing 10 marks for this paper (assuming eagle's solutions are correct) undermines my confidence!
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Originally posted by eagle:
any more questions to confirm?
I think no more for me. :D Thanks eagle!~
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Originally posted by The_innocent:
i got different form the answer
1a) 7(p-2) / p (simplify?)
7a(ii) 766 (3 sig fig)
10f(ii) a= 0, b = -22, c = 10
10(iii) Gradient of curve is more gentler
10b(i) (i draw something like the tic tag toe)
10b (a) 1/5 (b) 2/15 (c) 0 (d) 3/5
are these correct?Question 1(a), correct.
7(a)(ii), correct.
10(f)(ii), right.
10(b)(ii), all correct
As for the rest, I'm not sure
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Originally posted by eagle:
any more questions to confirm?
No more, I think. 10 marks just flew away. Highest I can get is 90 for this paper. If anyone can get the confirmed solutions for this paper, kindly post it! Thanks eagle :)
Well, actually there is one more I'd like to ask, but it's a graph question! So never mind :P
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Originally posted by [e].Le-V:
why? you think A1 is 90% - 95% ?
I remember some teachers mentioned A1 won't be so high because they are a lot of normal stream taking the same paper with us, so they will pull down the grade (not all of them of course, some are really good).
Don't worry man, as long as your total marks > 88%, you're quite safe for A1.
omg are u serious!?!?!?? im so sick of what i did with my math p2 right now plz bring me some good news. literaly slapped my self in the bus once i completed the circle qn since i didnt do it due to confusion and panic in the exam hall
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so how much yall minus?
for me, -1 for probability diagram, -1 for last qn, -1 for not timesing 12 to the volume of pencil. -1 for writing qn 7iv) after qn 8(wonder if this is wrong. i did put a note that the answer is in next next page)
so total minus -4 ish 96 of course if you count in the careless, can be around -10 total at most.
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Originally posted by Theguiltshow:
No more, I think. 10 marks just flew away. Highest I can get is 90 for this paper. If anyone can get the confirmed solutions for this paper, kindly post it! Thanks eagle :)
Well, actually there is one more I'd like to ask, but it's a graph question! So never mind :P
Is there a portion where they asked you to find out what other graphs to draw to solve some equation?
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My student -10 for undone questions because no time to finish :(
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yes. or at least tats what i percieve to be. it was moderately indirect. I rearranged it and got A=0 cos there is no Ax inside.
btw they gave you the extra line to draw and use it to ''solve'' a weirdo equation.