Mathematics: Post your doubts here!

[Jennifer Rosale]

View attachment 61781

Thank you SO much!!!

 

[Bah...]

Hello,
Can somebody please help me with questions 4 and 5?
Thank you

 

[krishnapatelzz]

https://www.facebook.com/groups/302892556809834/ discuss p3 doubts here

 

[krishnapatelzz]

which

Hello,
Can somebody please help me with questions 4 and 5?
Thank you

View attachment 62112

which year paper

 

[Bah...]

which

which year paper

w16_qp_31

 

[krishnapatelzz]

w16_qp_31

ask here someone will reply you in few minutes or sometimes seconds https://www.facebook.com/groups/302892556809834/ ask your friends to join too

 

[Thought blocker]

Hello,
Can somebody please help me with questions 4 and 5?
Thank you

View attachment 62112

You can join the FB group.. PPL reply there v.fast.
And easy to upload solutions there..

 

[Thought blocker]

Hello,
Can somebody please help me with questions 4 and 5?
Thank you

View attachment 62112

Here.

 

[Bah...]

ask here someone will reply you in few minutes or sometimes seconds https://www.facebook.com/groups/302892556809834/ ask your friends to join too

Thanks!

 

[Bah...]

Here.

THANK YOU!

 

[Saly Elkady]

It's not an international board but I really want to know how to solve it

 

[Thought blocker]

It's not an international board but I really want to know how to solve it

I have tried this. Can u tell me the answer?
I am not sure, saw such question for the first time.

 

[Saly Elkady]

I have tried this. Can u tell me the answer?
I am not sure, saw such question for the first time.

7,10
yeah ik it's Egyptian National Syllabus but I so wanted to know how to solve that xD

 

[Bishnu Dev]

It's not an international board but I really want to know how to solve it

Don't know if it's right however it is supposed to be solved like this i guess... There must be a mathematical error if the answer, you say, is 710

 

[Ali_A12]

Can someone please explain the second part???

 

[Saly Elkady]

Don't know if it's right however it is supposed to be solved like this i guess... There must be a mathematical error if the answer, you say, is 710

the answer is 7 and 10
idk maybe but thanks though

 

[Bishnu Dev]

the answer is 7 and 10
idk maybe but thanks though

Given that, Sum of First and Fourth term is 70 and sum of Second and Third term is 60, so there's no way the sum to infinity be 10 or 7.

From the answer i posted,

r = 2/3 or 3/2
When r = 2/3,
a = 54
T1 = 54
T4 = 16
Hence T1 + T4 = 70

Again, When r = 3/2

T1 = 16
T4 = 54
Hence T1 + T4 = 70

 

[Bishnu Dev]

Can someone please explain the second part???
View attachment 62145

It means P(-1 < x < 1) given X ~ N(0,1)

This would give probability within 1 standard deviation of the mean. Then use Binomial model to find the probability for more than 7 phone calls.

 

[Osama the mighty]

Hello everyone! I have a question is 991EX allowed in P3 and S1? Thanks!

 

[Saad the Paki]

Hello everyone! I have a question is 991EX allowed in P3 and S1? Thanks!

Use this as a guide.