Maths, Addmaths and Statistics: Post your doubts here!

[Dukeofwin]

Topics that didn't came today should be coming tomorrow without any doubt!
1. Permutation and combination
2. Application of integration and differentiation
3.Sets
4.Kinematics
5.Trignometry

 

[Dukeofwin]

All those who aced Today's paper! Please give out your advises on what should be done tonight and tomorrow morning!
My pattern miserably failed, Maybe your opinion might be helpful in doing good tomorrow!

 

[HarisLatif]

Just like everytime...
LOL jk

hey! please help me to solve the third part in question 8 abt permutationshttp://www.xtremepapers.com/papers/...ematics - Additional (4037)/4037_w03_qp_2.pdf

 

[Spidey21]

SOMETHING TELLS ME PnC will come in P2 tomorrow!!
be prepared for it!!

 

[Spidey21]

hey! please help me to solve the third part in question 8 abt permutationshttp://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics - Additional (4037)/4037_w03_qp_2.pdf

doing on my own
reply if wrong
1. 10C6
2.5C5 x 2C1 + 5C4 x 2C2
3.3C1 x 7C5 + 5C1x5C5 + 2C1 + 8C5!!
i think 3rd is wrong!!

 

[Dukeofwin]

doing on my own
reply if wrong
1. 10C6
2.5C5 x 2C1 + 5C4 x 2C2
3.3C1 x 7C5 + 5C1x5C5 + 2C1 + 8C5!!
i think 3rd is wrong!!

Spot on mate! You missed by a whisker in 3rd! Just cut this 5C1x5C5

 

[Spidey21]

Spot on mate! You missed by a whisker in 3rd! Just cut this 5C1x5C5

and why would i cut that??

 

[HarisLatif]

and why would i cut that??

it was saying that atleast one rose from each colour and u should cut the combination set you made in the middle because it consists of only red roses

 

[Spidey21]

it was saying that atleast one rose from each colour and u should cut the combination set you made in the middle because it consists of only red roses

isnt that actually showing that 1 is red and the other 5 are from the rest??

 

[HarisLatif]

isnt that actually showing that 1 is red and the other 5 are from the rest??

if five roses are taken then three or two can be taken from the rest. we can't combine the pink and yellow roses in that case. isn't it? and one thing more if you cut that part the answer will be right which is 175 i have got this now , anyways thankyou!

 

[Spidey21]

if five roses are taken then three or two can be taken from the rest. we can't combine the pink and yellow roses in that case. isn't it? and one thing more if you cut that part the answer will be right which is 175 i have got this now , anyways thankyou!

well in the rest of the question we did...
tbh if you get it but dont understand it there aint no use of it!

 

[A star]

yar me lost 13 lika a beghairat boss

The paper was all bad. I was so tensed and i woulda lost 20 marks like *A Boss*

 

[asd]

Guys, note that expansion is also coming tomorrow, prepare for that too. Even a few marks can save your grade.

 

[HarisLatif]

well in the rest of the question we did...
tbh if you get it but dont understand it there aint no use of it!

i have understood it

 

[Spidey21]

i have understood it

if you would not mind explaining it to me as well...:|

 

[Dukeofwin]

http://www.xtremepapers.com/papers/...matics - Additional (4037)/4037_w11_qp_22.pdf
In question 10 (b), How do we know that we have to take X- coordinates or Y-coordinates?

 

[Spidey21]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics - Additional (4037)/4037_w11_qp_22.pdf
In question 10 (b), How do we know that we have to take X- coordinates or Y-coordinates?

all ...
when its said to take out the Cordinates and not specified as X cordinates then you take out all !!

 

[Spidey21]

bionomial??

Guys, note that expansion is also coming tomorrow, prepare for that too. Even a few marks can save your grade.

 

[Dukeofwin]

all ...
when its said to take out the Cordinates and not specified as X cordinates then you take out all !!

I was talking about the area part! X coordinate or Y-coordinate of upper limit and lower limit!

 

[asd]

http://www.xtremepapers.com/papers/...ematics - Additional (4037)/4037_w02_qp_2.pdf
Q 6