₦airaland Forum

johnpaul1101: Greetings all generals. Plz i would like us to play with this practical question:
if 8 people handshake each other, what is the total number of handshakes that will be made?

hmmmm. . . . . .28 handshakes.

mathematician: doubledx u are totally wrong, now my working the eqn. 1/(cosx+1)² can also be written as (cosx+1)^-2, this means we have to use integration by algebraic subtitution. let u=(cosx+1), then du/dx= (-sinx), then then §(cosx+1)^-2.dx, becomes 1/(-sinx)§u^-2.du, after the integration we have /(-sinx)*(-u^-1) by replacing 'u' for its original value and multiplying, we have (sinx.cosx+sinx)^-1 + c or 1/(sinx.cosx+sinx)+c i hope u can see your mistake

Well done Sir, longest time on unilag's thread. Sir, easy-easy pls. We're making contributions here not challenges. . . .great job!

Mr Calculus: make una small small ooo,una dey make me dy fear ooooooo,,i salute ooooo@ oga dx

Ah tin sey na only me oooo. . . .you guys are just too good, but i'm lost sha, I swear!

mastermynd: my fATHER and my GOD,it is written,,,that weep may last for the night,,but ultimately JOY comes in the morning,i hav been awaited in this dark tunnel for long,,,let me break forth,and reach my hephzibah,,,BABA,,,,,lyk a fwend will say,,,LET ME HAV DIS DANCE,,,,and i will be a radical for you name,,,i go praise u pass oladoya,,,,and every other aspirant for dis page,,,,,,,,,,,,,oluwamastermynd says so.,,,,,,.....#makes sign of d cross#

Nice prayer. . . .¤prayers ascending now¤

@oladoya & salzy, me like your signs of inequality, make sense. Baba God go do ahm for us all (can see a light at the end of the tunnel).

Calculusf(x):
Approximate 48.5 to the nearest whole number...

I believe that this appro has to do with boundaries of a thing . Why not educate us on it like you did on 2go prof.

labodinho: itz like i sent to yu,check yur Inbox or Spam.or mail me so i can reply.Labodihoo.gmail.

My oga laboz, thank God sey i don catch you. Me no know sey you be post mahn b4 wey som pipu dey do yanga for mi, abeg help me post that mail for hia; oketundericharda@yahoo.com . . . e se oooo

yemmytcm: juz go get that thing wey every priest dey get,sebi i don show you.....bro,you don read,see how i dey see smoke for ya head

hmmm. . .i don hia ooo, go go buy baba sala size or boy alinco. That smoke you see no be buk ooo, na pentecostal hustle cos am ni ooo. . . . .i know sey you go don chop all your books by now, you be hardware now. We no go bang IJN! #victoria ascertia#

mustoupha: My broda,God dey sha...fins will surly work out ryt.jst b positive,we'l all get there 1 day

Inspiring! Thanks boss.

yemmytcm: Ifisco ...ow va ? Add moi on facebook with the username "yemmyworld" ...for real i luv you all,...my brova labodz,deacon ortarico,my sweet farano,dear asiko,barr.lurve,dr benjamin,mastermayorwa,brova oluwadare,engr rashy,boss damosky,nurse ifisco,my sweetie aurorae and everyone ,the list is long,but i av everyone in mind....and I'm beginning to really lyk mesopta....funny dude ...#looking at da future....catch you guys at UNILAG#....CMUL on my mind

Finally! Finally!! Finally!!! You don endorse my appointment, thanks ooo. ¤deacon ortarico. . . .yes boss¤

otokx: congrats

Thanks

mastermynd: Q1. Ade and Uche can do a piece of work in
18days. Ade can do it alone in X days, whilst
Uche takes 15 days longer to do it alone.
Which equations describes
X?
Q2. What is the probability that a number
chosen at random from the integers between
1 and 10 inclusive is either a prime or a
multiple of 3?

1. x^2 - 21x - 270 = 0

mustoupha: Ortarico,skul dey o,ao ur own syd naw? nobody knw me 4 here again o,i go becom badass naw so dat dem go talk

I thank Gawd my brother, all is well. No be the fault of these ppl, most of dem dey new dah's wai. . . .dem fit para ooo.
Lest I forget, you get brothers for here wey you go probably put through in few months to come (by his grace), I be one of them sha. . . .thank you sir.

@Sir otokx, thanks for taking the time to reply all questions and info here. . .Only God can reward you better.
I'm happy to tell you that i've done the reg. here in lagos and 'twas successful. Thanks

max_ben: done, check ur emails...

Please boss, help me do that too: oketundericharda@yahoo.com

Calculusf(x):
...master ortarico,i love that,let's meet on 2go to do others...

All right and thanks prof.

Mbahchiboy: [Yeapy] it is i mr calculus am getin som temp dificulties postin
i fink i made a mistake in d 1st calculatn o
dat 1 was 4 only 1 leave up 2 80yrs
@ least 1 means 1 and above
P(@ least 1 leave up 2 80yrs)=[P(M)xP'(W)]+[P'(M)xP(W)]+[P(M)xP(W)]
=[2/3x2/5]+[1/3x3/5]+[2/3x3/5]
=4/15+3/15+6/15=13/15

You've just done a great job boss!

mustoupha: My boss I dey o ;i knw say u b student alredy,no b true?

Na whose handle I bin see so? Gov. mustoupha, ah longest time ooo! Oga shol nko for there? #Eco Wizardz#

mathematician: advanced level questions
NB: no options

a cyclist plans to travel from lagos to ogun, he leaves lagos at exactly 9:00 am and travles at an average speed of 24km/h, after travlelling for 45 mins he intercepts a car travelling from ogun to lagos, the car waits 10 mins and travels back to ogun, at what time did the car intercept the cyclist
ortarico and yemmytcm, this question is mainly for you two.

hmmmmm. . . . .got 10:15 am

oyestephen: Let the tens digt be x and the unit digit be y....therefore 3x=2+y....eqn1....then since x is in tens and y in units, the digits should be 10x+y but since its now interchanged the new digits is 10y+x.....so 10y+x-(10x+y)=36...10y-y+x-10x=36....9y-9x=36 (divide through by 36)...y-x=4....eqn 2....so 3x=2+y...eqn 1 and y-x=4 eqn 2....from eqn 2 x=y-4..eqn 3...sub y-4 for x in eqn 1....3(y-4)=2+y..3y-12=2+y....3y-y=12+2...2y=14..y=7...going back to eqn 3 x=y-4...x=7-4=3...so the digits are 37

You've done a great job boss!

oladoya: welllllll welllll wellll. Leme say a big good morning to my ogas before i solve that question, small tin now dey will knock my head. Mr Labods,oga ortarico, sergeant lurve,lutenant farano, oga yemi and so on. No vex o i get amnesia so i no fit remenber nna finish. Now the solution is...
We have our formula as= n!/r(n-r)!
We were given 8men and we need 2 out of them, also 9women and we need 3 out of them.
Then we say ladies first
9c3.. Our n=9, and our r=3
then followin the formula we have
9c3=9*8*7*6*5*4*3*2*1/3*2*1(6*5*4*3*2*1)=84
likewise men
8c2=8*7*6*5*4*3*2*1/2*1(6*5*4*3*2*1)=28
then bring them together= 28*84=2352. Chikena

#laughs#. . . .me bin dey watch you since morning, well done oga. Oya do mastermynd work ma see.

Walextopolino: at least a head here is 3|4

oladoya: ofcourse its obvious

Bosses, free me it's no fault of mine. Btw, i've modified it to a head.

Omosivie,:
Thanks, I understand it now. U're really good @ explaining.

Thanks too.

oladoya: definately if we havefour samples HH HT HT TT and the question is atleast a head not just a head but atleast a head meaning we can as well have more than a head that then gives 3/4 which am sure is the answer by the way if cold feet means fear then why was the answer given as excited? I think the correction should be modified and give ppl there right marks

Yeah, and that makes the both of us right cause I chose D but according to his correction I failed 5 and 9, I was only trying to work it out according to the correction he provided which I think the question there suppose to be find the prob of getting a head not at least a head. So he himself should come and explain why it's 1/2 according to his correction. . . . Shikena!

Did he say it's excited? Hmmmm. . . .that makes his correction totally wrong then.

oladoya: We.ll i scored 12 and not 7 and let somebody solve that number 9 pls. And if i may ask, to get cold feet means what? Woozy

@mathematician must have made a mistake, i was the one who scored that 13 but awarded it to yemmy. Maybe because our posts on the answers to his questions were close.

9. Tossing a coin twice gives: HH HT TH TT which is 4. Therefore the prob of getting a head equals to: 2/4= 1/2. . . . .answer

Cold feet simply means fear. It's an IDM

Omosivie,:
@ Mathematician, pls solve number 7 and 10. Thanks

lemme help you:
7. S= D/T
Convert the 6 secs which is the time to hour since we were told to give the speed in kmh-1: 6/3600= 1/600 hours. . . .keep that
now convert the distance 0.6 to fraction: 6/10
back to the formula: s= d/t
=> 6/10/1/600
=> 6/10 x 600/1
=> 3600/10
=> 360kmh-1 . . . .answer

10. Let the cost of one good be y
cp of 8 goods= 8y
sp= 8y + (40% of 8y)= 11.2y
cp of 2 goods= 2y
sp= 2y - (10% of 2y)= 1.8y
total sp= 11.2y + 1.8y
=> 13y
total cp= 8y + 2y
=> 10y
total gain= 13y - 10y
=> 3y
% gain= 3y x 100/10y
=> 30%. . . . .answer

mathematician: Eniorisha 9/16
mastermynd 10/15
yemmytcm 13/15 1st
oladoya 7/15
rap maestro 7/15
lurve 12/15
adezahife 8/15

Boss are we quarrelling, you didnt score me or i scored camera ni? #disappointed#

@mathematician longest time boss hope all is well? Here are my answers:
1. D 2. B 3. C 4. C 5. B 6. B 7. C 8. A 9. D 10. A 11. C 12. A 13. C 14. D 15. A

.

oladoya: pls now let somebody email the maths practice question to me pls not the pdf but just the normal one that i can access on ma fone... Pls Oladoya@yahoo.com

I think one can download it from one's post-utme profile account directly?

feyijo: Assuming;it was bought for #1 each.
Cost price =#30
Selling price =sp of 20PCs + 10PCs
I.e (20 * 1.16=23.2. + 10PCs * .96= #9.6)
#32.8

Profit= sp - cost price
=#32.8- #30=#2.8
2.8/30 *100= 9.33

Bravo! I have once asked same question here.

3ga: I tried buying in Fct but the banks here don't have it, so i had to travel to uniport to buy the form.

You mean it isn't sold over there at FCT? Well, I'm paying tomorrow so i'll feed you guys back if it was successful.

labodinho: solve as a frustrum.Using small radius as 8 and big radius as 12.....8/x=12/x+20= small h.Big H=h+20. So u solve with the formular...1/3 pie R(big radius)squ(20+h)-1/3 pie r(small radius) squ h= option (E)....try n u will get that,on d road sry for nt showing proper workings.

On point Sir