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in sha Allah
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no dude Re means real and it's mentioned in the question + it did came in the past years!awful the last 2 questions were hell !!!
the stupid complex number thing wasnt even printed properly.. it said the Re > 0.. which was supposed to mean that the real part was greater than zero.. WTH !? was i supposed to guess that Re meant real part?
oh its because since all the presents are going to be distributed among 11 players so 11! and then dividing the presents 5 pens = 5!, 4 diaries= 4!, 2 notebooks = 2!
so you have 11! / 5! x 4! x 2!
the purpose of factorial ' ! ' is that it works like 11 x 10 x 9 x 8 x .... as the players get the gifts the total number of gifts and the players waiting to recieve the gift decreases..
do you get it?
ok i'll put it in very simple words for you, permutations is 'arrangement' whenever you have to arrange something or put it in sequence.. it always means permutationspermutations and combinations good techniques..any body got notes on these???
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_qp_61.pdf
i dnt understand 4ii... u dnt hav to do it..... jus explain Jiyad Ahsan
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_qp_61.pdf
i dnt understand 4ii... u dnt hav to do it..... jus explain Jiyad Ahsan
it went terrible... the 1st 7 questions made me feel like i wud get full marks n then ....... felt like murdering the a***hole who made the question
umm ok this is a method known as assumed mean, you basically take a number and assume that it is the mean of a set of numbers (lets say we have 16, 17, 19, 21, 22) so I 'assume' the mean is 20 and the i calculate the difference of every number from that assumed mean. first lets just do it. then i'll explain this in statistical sensehttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_ms_62.pdf
Q3 anyone ? please . I also want to know the rules of these types of questions .
(2C2 x 9C4) + (2C0 x 9C6)
stupid mee... my brain's nt working ... thanks(2C2 x 9C4) + (2C0 x 9C6)
= 186 + 84
= 210
total 11 questions right? you have two conditions, either both questions or none
well say first you choose both the questions so you'd have 2C2 multiplies by the rest 4 questions will be chosen from the 9 remaining so 9C4
the other condition if 2C0 (you dnt choose both questions) multiplied by the all the 6 questions chosen from the remaining p so 9C6
add both conditions
we all have those 'brain not working' days, kher ogaestupid mee... my brain's nt working ... thanks
yea !!! can u help me with 7iii the same year??? i'll sleep after that.......we all have those 'brain not working' days, kher ogae
P(X < 34.6)yea !!! can u help me with 7iii the same year??? i'll sleep after that.......
why arent we using mean n sd frm 7ii??? Im sorry if u find my qs stupid...P(X < 34.6)
P (Z < 34.6-41.1/3.4 )
P (Z < -1.912)
=Φ (-1.912)
=1 - Φ (1.912) as Φ(-a) = 1 - Φ(a)
=1-0.9713
=0.0287
=0.028
multiply that by 0.95
=0.95 x 0.028
=0.0266 (reasons and explanation below)
since its given that the probability that 5th symphony rhyme is more than 34.6 = 0.05
therefore the probability that it is less than 34.6
= 1 - 0.05
=o.95
probability that 5th and 6th are less than 34.6
= 0.028 x o.95
= o.o266
Let me know how did you do that? did you get x=2a?that was easy
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