₦airaland Forum

Peace!

Umartins1:
Some Maths questions for your pleasure.




I did not put options to avoid guess work. Work it out, they're cheap questions sourced from Jamb PAQ.

2. Find the value of B if the line 2y-Bx
+4=0 is perpendicular to the line y
+(x/4)-7=0
2y-bx+4=0
2y=Bx-4
Y=bx/2-2
M1=-1/m2
M2=1/4
B/2=-1/1/4
B/2=-4
B=-8
3. Find the principal which amounts
to #5,500 at Simple Interest in 5
years at 2%pa.
A=p(1+r/100)^n
5500=p(1+0.02)^5
5500=p(1.02)^5
5500/(1.02)^5
5500/1.1040808
4981.50
4. A car dealer bought a second-hand
car for #250,000 and spent #70,000
refurbishing it. He then sold the car
for #400,000. What is the percentage
gain?
Total cost=320000
S.p-c.p/c.p *100=profit
400000-320000/320000*100
1/4*100
25%
5. Tcliff saves #100 in his first year in
Unilag and each year saves #20 more
than in the preceding year. In how
many years will Tcliff save #5,800?
S=n/2(2a+(n-1)d)
5800=n/2(200 +20n-20)
20n^2+180n-11600
N^2+9n-580
(N+29)(n-20)=0
N=20
7. Find the number of sides of a
regular polygon whose interior angle
is twice the exterior angle.
(2n-4)90=720
2n-4=8
N=6
8. Find the value of P if the line
joining (p,4) and (6,-2) is
perpendicular to the line joining (2,p)
and (-1,3)
Y2-y1/x2-x1
-2-4/6-p=-6/6-p
M1=-6/6-p
M2=3-p/-1-2
P+3/3
M1=-1/M2
-6/6-p=-1/p+3/3
6/6-p=3/p+3
P=4
10. If (x-1), (x+1) and (x-2) are factors
of the polynomial ax3+bx2+cx-1, find
a,b,c.
(X-1)(x+1)=x^2-1
(X^2-1)(x-2)
X^3-2x^2-x+2
A=1
B=-2
C=-1

2. Find the value of B if the line 2y-Bx
+4=0 is perpendicular to the line y
+(x/4)-7=0
2y-bx+4=0
2y=Bx-4
Y=bx/2-2
M1=-1/m2
M2=1/4
B/2=-1/1/4
B/2=-4
B=-8
3. Find the principal which amounts
to #5,500 at Simple Interest in 5
years at 2%pa.
A=p(1+r/100)^n
5500=p(1+0.02)^5
5500=p(1.02)^5
5500/(1.02)^5
5500/1.1040808
4981.50
4. A car dealer bought a second-hand
car for #250,000 and spent #70,000
refurbishing it. He then sold the car
for #400,000. What is the percentage
gain?
Total cost=320000
S.p-c.p/c.p *100=profit
400000-320000/320000*100
1/4*100
25%
5. Tcliff saves #100 in his first year in
Unilag and each year saves #20 more
than in the preceding year. In how
many years will Tcliff save #5,800?
S=n/2(2a+(n-1)d)
5800=n/2(200 +20n-20)
20n^2+180n-11600
N^2+9n-580
(N+29)(n-20)=0
N=20
7. Find the number of sides of a
regular polygon whose interior angle
is twice the exterior angle.
(2n-4)90=720
2n-4=8
N=6
8. Find the value of P if the line
joining (p,4) and (6,-2) is
perpendicular to the line joining (2,p)
and (-1,3)
Y2-y1/x2-x1
-2-4/6-p=-6/6-p
M1=-6/6-p
M2=3-p/-1-2
P+3/3
M1=-1/M2
-6/6-p=-1/p+3/3
6/6-p=3/p+3
P=4
10. If (x-1), (x+1) and (x-2) are factors
of the polynomial ax3+bx2+cx-1, find
a,b,c.
(X-1)(x+1)=x^2-1
(X^2-1)(x-2)
X^3-2x^2-x+2
A=1
B=-2
C=-1

jorrn:
1. I--- before I sleep each day. A prayed B prays C praying D pray

2. She is----in complexion (A) Light B fair C white D bright.

3. Planning---concentration A require B requires C requiring D required

4. The food HAS BEEN EATEN. The Bold is a ----phrase A verb B Noun C adverbial D Adjectival.

5. This is the best car---- I have seen. A that B which C in which D for

DBBDA

ariyibiyomi:
a+a=4, 2a=4, a=2, (a+d)+ar=13, (a+2d)+ar^2=30 put a =2 in the equ, 2+d+2r=13, d+2r=11.... equ i, 2+2d+2r^2=30, 2d+2r^2=28, 2(d+r^2)=28, d+r^2=14....equ ii, solve equ i and ii simutaneously r= 3 or -1, neglecting -1, sub the value of r=3 into equ i, a =5, possible progression for AP is 2, 7, 12, 17, 22 etc, possible progression for GP is 2, 6, 18, 54, 162 etc .

wow...am sure u did further maths...solved it sef...but with d help of my further maths textbook...atleast if other go we can make this group worth it bro....u too can make endeavours to post questions

Umartins1:
Economics.


You brought me here again!

bro...do u know the number of people u are helping on this thread? No p xha. But its not fair

An A.p and G.p have the same first term. Corresponding terms of the two progressions are now added together to give the series 4+13+30.... Find the possible progression

Pls bro 2655000A for pro bible and photo studio

labodinho:
1.I guess they ain't comfortable with the normal jamb combo tin maybe cos of stress of getting different questions every year.

2.The is no comprehension and oral cos of the little time given for the exam.Unilag postutme isn't hard like that just technical.So if u know better and shortest tricks in maths,start applying it.

thanks man

Hello guys,pls. I want us to confirm something.
1)Can't unilag change their policy about setting questions and decide to introduce our jamb subjects instead of maths,english and g.paper?
2.Are we expecting comprehension,oral from english?

A worker's present salary is #24,000 per annum. His annual increment is 10% of his basic salary. What would be his annual salary at the beginning of the third year?

Umartins1:
He said this week. But tomorrow is Thursday, this week is almost over.

thank God we can continue our normal discussion now...was thinking of un-following the thread sef...but just considered what I stand to gain from umartins,zaragirl nd a bunch of others.If we continue with the tone we started with at the beginning of the month,By God's grace we would all make it

Umartins1:
Someone should roll some enigma....



Pls, don't roll integration ooo

u roll in now...make we scatter this place

zaragal:
GT105 modern English I heard.....just now A) noise b) any noise c)a noise d)some noise
2) he recently bought a new........for his living room A)furniture b) piece of furniture c) some furniture d) pieces of furniture
3) he's diagnosed with .... A) stroke b) a stroke c)some stroke d) the stroke
4) the Williams and.....will be there A) us b) ourselves c) we d) them
5) if boys is to boy, then data is to...... A) datum b) data c) datos d) datis
Okkk gurus in the house answer

DDACA

Umartins and zaragirl...pls can we fire on?

zaragal:
6) from the _ the man promised to be nice
a) onset b) onstant c) onslaught d) out set

7) the senator said he is good _ skating
a) at b) with c) on d)b

_ always unique
a) hes' b)his c)his' d) he'

9)'_ ' b)Im c)am d)I'am

10) His brother was charged_ murder
a) for b) with c) on d) at

D,A,D,-,B

I guess I have an idea,let guys whom their maths is solid roll in some questions, and Zaragirl nd ppl dat have gts 105 roll in some questions. That's the way we can help each other.

emekadeboy:
*3 children shared a basket of mangoes in such a way that the first child took ¼ of the mangoes and the second child ¾ of the remainder what fraction of the mangoes did the 3rd child take

*Simplify √27 + 3/√3


* If x² - 1 = 0 find x

*the hcf of a²bx + ab²x and a²b - b² is

* Express r in terms of p and q in the following equation p/2 = √r/r+q

bro. For the last question is the root for both d numerator and denominator

Umartins1:


I will still tackle that your question. I'm currently tackling a question on Uniben's thread. I still have some Economics questions I want to provide answer to on Uni-Ibadan thread. So, pls be patient with me. If I don't know it, I'll tell you.



Kindly tackle the question posted by emekadeboy. Imma join you soon.


Thumbs up, bro. I see us making it.

thanks bro..sm1 answered it already

emekadeboy:
*3 children shared a basket of mangoes in such a way that the first child took ¼ of the mangoes and the second child ¾ of the remainder what fraction of the mangoes did the 3rd child take

*Simplify √27 + 3/√3


* If x² - 1 = 0 find x

*the hcf of a²bx + ab²x and a²b - b² is

* Express r in terms of p and q in the following equation p/2 = √r/r+q

1.let the number of mangoes be X
First child;1x/4
Second child;3/4 of 3x/4=9x/16
Third child=y
1x/4+9x/16+y=x
Y=3x/16
2.After all the L.C.M u get root 81 +3/root 3
9+3/root 3
12/root 3
Rationalise =4root3
3.(X-1)(x+1)=0
X=1 or -1

Umartins1:
1. Let the total weight of the first group= x X/45 = 40 X= 40*45 X= 1800kg

Let the total weight of the 2nd group = y Y/30 = 45 Y= 30*45 Y= 1350kg

Let the total weight of the 3rd group = Z Z/25 = 50 Z= 50*25 Z= 1250kg
Total weight = 1800kg + 1350kg + 1250kg = 4400kg
Total number of students = 45+30+25 = 100
Therefore, mean weight of all students = 4400kg/100 = 44kg


2. X/25=6 X= 6*25 X= 150
150-30 = 120
120/24
= 5


3. Let the total age of children = x X/3 = 9 X= 9*3 X= 27years
Let the total age of parents= y Y/2= 39 Y= 39*2 Y= 78

Total age= 78+27 = 105yrs
Average age = 105/5
= 21yrs

lol...almost posted the answers...u xha...fastest fingers

ariyibiyomi:
hmmmmmm

lol...thanks man

ariyibiyomi:
1. Let number of session be x, a=10, d=2, s=n/2(2a+(n-1)d), 400=n/2(2x10+(n-1) 2), 400=n/2(20+2n-2) = 400=n/2(18+2n)= 800=2n^2+18n=2n^2+18n-800= n^2+9n-400, solve quadratically, n=16 or -25, the number of session is 16. 2. 954-495=459, the number is 4. 3. Y=x^2, x=square root of y, x=y^1/2, volume of region=Pix^3, =pi(y^1/2)^3=pi(y^3/2), integrate y^3/2=2/5(y^5/2), =pi2/5(4^5/2)=pi2/5(2^5)=pi2/5(32)=64pi/5. 4. Let the original price be y, y+(y x 20/100)=y+0.2y=1.2y, increase again by 30%=(1.2y x 30/100)+1.2y=(1.2yx 0.3)+1.2y=0.36y+1.2y=1.56y

wow..thanks man but dat no 2 u guessed

Umartins1:
Harbeemx,,,

I've been seriously battling your question. I hope you have solution with you there.

nope...been solving it too..

Umartins1:
You go dig into your Further Maths cum dey test our skills
Na post utme be this one too?

Saw it in unilag's past questions oo

Umartins1:
You go dig into your Further Maths cum dey test our skills
Na post utme be this one too?

Saw it in unilag's past questions oo

Pls anybody, I have problems with these questions;
1)Ann goes swimming regularly. She wants to improve her fitness,so she decides to swim 10 lengths in the first session and increase the number of lengths she swims by 2 every session. When she reaches 50 lengths in a session she will not increase the number any further. Ann decides to give herself a reward when she swum a total of 400 lengths. After how many sessions does she get the reward?
2)A three digit number consists of 9,5 an d one more number. When these digits are reversed and then subtracted from the original number the answer yielded will be consisting the same digits arranged in a different order. The missing digit is?
3)The volume of a region bounded by y-axis,y=4 and y=x^2
4)A dealer increased the price of an item by 20%,then increased the price of the same item by 30%. If x is the original price,what is the price after two increases?

TCliff:
Watch out for questions like
Wen was d last gubernatorial election
D date Buhari took over power 4rm Jonathan or d date he was sworn in
Wen was d last presidential election
Buhari was d head of state from _____ to _____
Margin btw Jonathan nd buhari's vote
Aw many languages is been spoken in Africa
The first vice chancellor of unilag
Wat committee was professor Rahman bello in b4 he became d vc of unilag
Name of d former vc of unilag nd wat year did he died
Who is the director of cits
Ds r part of d questions asked in GST 201 exam nd I fnk unilag is likely 2 ask yu guys few of those questions den pls try to get ds gst 105 it just 500

pls bro,can we get the answers

kidrossy:
I am ………admission to the university. A)seeking an B)seeking for C)seeking after D)seeking

He tried to ……… me to go there with him. A)confuse B)convince C)drag D)persuade

D,D

ariyibiyomi:
ave solve d number 5 and 6, did u see it

sure

ariyibiyomi:
interest not amount

thanks man

Umartins1:
Correct. Leave ur answer in fraction

5/9