Maths, Addmaths and Statistics: Post your doubts here!

[CaptainDanger]

Re: O'level Maths, Addmaths and Statistics help available he

c-i
AG=1
GB=4-1=3 m

ii- Here see that both triangles are similar... Area of similar shapes is given by squaring there side ratios...
AREA KDF/AREA HGB= (6/3)^2
SOLVE and the answer is 4/1

iii- 4-1=3
3/4 answer...

 

[Bioshock]

Re: O'level Maths, Addmaths and Statistics help available he

Hey Can anyone explain me about cubic sequences

 

[Dissent]

Re: O'level Maths, Addmaths and Statistics help available he

Could someone help me find angle PSR?

Hey Can anyone explain me about cubic sequences

Do you mean like this: a, 3a, 9a, etc.?

That's geometric progression. The nth term is given by the formula: ar^(n-1)

a = the first term
r = common ratio

In this case, common ratio = 3a/a = 3

 

[abcde]

Re: O'level Maths, Addmaths and Statistics help available he

Question 7) (a) (ii)

 

[abcde]

Re: O'level Maths, Addmaths and Statistics help available he

Hey Can anyone explain me about cubic sequences

Do you mean like this: a, 3a, 9a, etc.?

That's geometric progression. The nth term is given by the formula: ar^(n-1)

a = the first term
r = common ratio

In this case, common ratio = 3a/a = 3

Can you explain this further please?

 

[OakMoon!]

Re: O'level Maths, Addmaths and Statistics help available he

Could someone help me find angle PSR?

Hey Can anyone explain me about cubic sequences

Do you mean like this: a, 3a, 9a, etc.?

That's geometric progression. The nth term is given by the formula: ar^(n-1)

a = the first term
r = common ratio

In this case, common ratio = 3a/a = 3

This is not an example for a cubic sequence. Geometric progression is a totally different thing.

 

[abcde]

Re: O'level Maths, Addmaths and Statistics help available he

So what is a cubic sequence? Is it this: 1, 8, 27, 64,....? What about geometrical progression? Never heard of it! :S

 

[iFuz]

Re: O'level Maths, Addmaths and Statistics help available he

Question 4 c. 1 and c 2

http://www.xtremepapers.me/CIE/Cambridg ... _qp_21.pdf

need explaination

 

[abcde]

Re: O'level Maths, Addmaths and Statistics help available he

Question 4 c. 1 and c 2

http://www.xtremepapers.me/CIE/Cambridg ... _qp_21.pdf

need explaination

I hope this helps!

 

[Maleeha]

Re: O'level Maths, Addmaths and Statistics help available he

cud sumone help me in sets topic.? it jxt doesnt get into my head.. lyk the question that came in paper 1.. if suppose its P =(1,2,3,4,5) and Q=(4,5,6,7) and the universal set contains (1,2,3,4,5,6,7,8,9) so if the question is P U Q' would we include 4 and 5 in the answer??

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

Ok so here is my answer
Universal sets =(1,2,3,4,5,6,7,8,9)
P=(1,2,3,4,5)
Q=(4,5,6,7)
so what is P U Q' ?
ok so here is my answer
first find Q' =(1,2,3,8.9)
so
P U Q' =(1,2,3,4,5,8,9)

 

[Maleeha]

Re: O'level Maths, Addmaths and Statistics help available he

so 4 and 5 are included.. even if they are a part of Q...k thnx

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

so 4 and 5 are included.. even if they are a part of Q...k thnx

they are part of Q not Q' but they are part of P !! the question is asking Union !! Hope I m correct !!

 

[Maleeha]

Re: O'level Maths, Addmaths and Statistics help available he

ohhhkk....!

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

your getting me right ?? In Q' we will list down those elements which are not present in Set Q and then we will deduct those from the universal set !!

 

[Maleeha]

Re: O'level Maths, Addmaths and Statistics help available he

yea.. i always did this but never really was satisfied... now i get it..thnx again

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

No problem

 

[amazon]

Re: O'level Maths, Addmaths and Statistics help available he

Question 5 part (c) here

Problem in this questiion. Please help..

 

[CaptainDanger]

Re: O'level Maths, Addmaths and Statistics help available he

See carefully,
When the (S U F)' region has no numbers or is empty then the x becomes least... And when F is the subset of S... Then y will be greatest... S can't be subset of F as it has higher number of students... Example :
A has n(10) and B has (20)
find greatest and least values of A U B...? A U B will be greatest when A intersection B is empty... So 10 + 20=30 and it will be least when A becomes subset of B, then n(A U B)=20...

 

[Maleeha]

Re: O'level Maths, Addmaths and Statistics help available he

cud anyone post here the steps for its solution.. atleast the beginning.. plzzzzzzzzzz
http://www.xtremepapers.me/CIE/Cambridg ... _qp_22.pdf
im stuck