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OCR Maths B Unofficial Markscheme

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i put 121 because i though that 120 would be when they were at the same place and 121 was when they overtook each other.

This is why it was badly worded! Like anything >120 would be the point where they overtake, so idk why they didn't just ask for the point where they met. Bloody OCR

Reply 21

Pilot747

On a scale of 1 - 10, how hard did you find the exam?

Reply 22

willg66

Original post by studentgcse2016

same!! pretty sure thats right

What are your predicted grades in maths? Like what you aiming for?

Reply 23

willg66

Did anyone else put 0.1 for the probability of picking the apple greater 130kg or something like that? The histogram one

1/10

If not what did you put

(edited 7 years ago)

Reply 24

Melad

Original post by willg66

Did anyone else put 0.1 for the probability of picking the apple greater 130kg or something like that? The histogram one

1/10

If not what did you put

Yeah, it was 0.1

Reply 25

willg66

Original post by Melad

Yeah, it was 0.1

Can you remember any other answers you got even if you can't remember the question tell me so I can try and remember what I got cheers

Reply 26

Psychosis mock

What was the apple question?

Reply 27

Psychosis mock

Original post by willg66

Can you remember any other answers you got even if you can't remember the question tell me so I can try and remember what I got cheers

The 1 where it was like 5^y x 5^4 = 1 I got y = -4 cause anything ^0 is 1

Reply 28

Psychosis mock

Original post by Melad

Yeah, it was 0.1

Why was it that ? I can't even remember the question

Reply 29

willg66

Original post by Psychosis mock

The 1 where it was like 5^y x 5^4 = 1 I got y = -4 cause anything ^0 is 1

Yeah I got that
And the next one was the value of P is 6?

Reply 30

Psychosis mock

Original post by willg66

Yeah I got that
And the next one was the value of P is 6?

Yeah I got 6 too, but what's the apple question!!

Reply 31

willg66

Original post by Psychosis mock

What was the apple question?

The histogram and it said what is the probability that some dude picks an apple of a weight greater than 130 or something like that it simplified to 1/10

Reply 32

robyn2000

Anyone else get 1/40 for the apple probability? Can someone explain how they got 0.1? Thanks!

Reply 33

willg66

This is the exponential graph we had to sketch 3^x

Reply 34

Psychosis mock

Original post by willg66

The histogram and it said what is the probability that some dude picks an apple of a weight greater than 130 or something like that it simplified to 1/10

Don't u do 6/60 x 5/59
Which is 1/118

Reply 35

willg66

Original post by Psychosis mock

Don't u do 6/60 x 5/59
Which is 1/118

Don't know where you've got the 5/59 from? Unless the question said he took two and didn't take it back which would be correct😩 I just got 6/60 simplified to 1/10

Reply 36

robyn2000

Original post by Psychosis mock

Don't u do 6/60 x 5/59
Which is 1/118

Oops! I did 60 x 60 for the denominator, that's stupid. Oh well I think I did the 6 x 5 bit write. Lets hope for method marks! I think it was 3 marks right? Thanks for explaining though!

Reply 37

Psychosis mock

Original post by willg66

Don't know where you've got the 5/59 from? Unless the question said he took two and didn't take it back which would be correct😩 I just got 6/60 simplified to 1/10

It's cause there are 60 apples and 6 are the given weight so when he takes one both numbers decrease by one to form 5 and 59 because it's the probability of him picking 2 apples and he doesn't put them back