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Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:34pm On Nov 14, 2013
doubleDx:

The typo was sin^(x/2) instead of sin^2(x/2), it was something that was easy to understand... Well, @ richiez I think you should give him the mark!

yea that's true
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:35pm On Nov 14, 2013
Next question is question 10 chosen by Busuyem
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:36pm On Nov 14, 2013
Sum pple brain don dey catch fire o....hahaha...nice wuks guys..
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by AlphaMaximus(m): 1:36pm On Nov 14, 2013
smurfy:

No Maximus. You don't understand. When Richiez first posted the question, the multiple choice I only, II and III only etc. wasn't included. Ask Richiez. Only the answers I, II and III were there. Then option III had a typo. That's I didn't pick it. I submitted my answer, refreshed the page only to see A, B, C, etc. and correction to option III
Alright...next time please do not send any answer before cross checking questions and spotting irregularities
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:36pm On Nov 14, 2013
doubleDx:

The typo was sin^(x/2) instead of sin^2(x/2), it was something that was easy to understand... Well, @ richiez I think you should give him the mark!

No, it wasn't that. Believe me, it was worse than that. It didn't make sense so I thought it was just there as a distraction
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:37pm On Nov 14, 2013
Richiez:

yea that's true
me nko.........? same thing goes 4 me o...pls consider me too.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:38pm On Nov 14, 2013
Alpha Maximus: Alright...next time please do not send any answer before cross checking questions and spotting irregularities

Heeeeeeeeee! Thanks guys! Phew!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:39pm On Nov 14, 2013
smurfy:

No, it wasn't that. Believe me, it was worse than that. It didn't make sense so I thought it was just there as a distraction
yes,that's true o...me too thought the same thing o...i pray that they will reconsider us.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by LogoDWhiz(m): 1:40pm On Nov 14, 2013
Alpha Maximus: Alright...next time please do not send any answer before cross checking questions and spotting irregularities
me too o.. [color=#006600][/color]
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by jaryeh(m): 1:41pm On Nov 14, 2013
sharp sharp abeg! Time dey go
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:42pm On Nov 14, 2013
SCORE CARD FOR ROUND 3 2nd Question

1. :::JARYEH::: 10pts

2. :::DENNIECE1::: 12pts

3. :::IDENYIJOSHUA::: 10pts

4. :::PAPINDINHO::: 2pts

5. :::DR.GBOY::: 8pts

6. :::FACTORIAL1::: 10pts

7. :::AYSUCCESS99::: 12pts

8. :::MIRACY::: 2pts

9. :::KENDZYMA::: 10pts

10. :::LOGODWHIZ::: 10pts

11. [url=https://www.nairaland.com/amazing%20angel]:::AMAZING ANGEL:::[/url] 10pts

12. :::SMURFY::: 12pts

13. :::MOZARINIA::: 2pts

14. :::TOIDEVE::: 4pts

15. :::CASHIO::: 2pts

16. :::DYSHOW::: 4pts

1 Like

Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by AmazingAngel(f): 1:42pm On Nov 14, 2013
Hahahhahahhahha,ppl sha
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Fynestboi: 1:43pm On Nov 14, 2013
Where kendyzma
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:44pm On Nov 14, 2013
smurfy:

No, it wasn't that. Believe me, it was worse than that. It didn't make sense so I thought it was just there as a distraction

That was the error, it's still in my sent folder to richiez! Well, with the permission of other quiz masters, I'd like them to give you your points.....
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by AmazingAngel(f): 1:45pm On Nov 14, 2013
Pls tell us d ansa,cos I tot I got it
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 1:46pm On Nov 14, 2013
oya....me I wan upgrade my score jawe *sobs* how much be dat....@richiez,doubledx and Alpha maximus....? Lolz, nice one though...no bring qts that involve much calc. again, else, I ban all of una here...Lolz.

#Cheers
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:47pm On Nov 14, 2013
Fynestboi: Where kendyzma
i'm wondering too!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:47pm On Nov 14, 2013
Richiez: SCORE CARD FOR ROUND 3 2nd Question

1. :::JARYEH::: 10pts

2. :::DENNIECE1::: 12pts

3. :::IDENYIJOSHUA::: 10pts

4. :::PAPINDINHO::: 2pts

5. :::DR.GBOY::: 8pts

6. :::FACTORIAL1::: 10pts

7. :::AYSUCCESS99::: 12pts

8. :::MIRACY::: 2pts

9. :::KENDZYMA::: 10pts

10. :::LOGODWHIZ::: 10pts

11. [url=https://www.nairaland.com/amazing%20angel]:::AMAZING ANGEL:::[/url] 10pts

12. :::SMURFY::: 12pts

13. :::MOZARINIA::: 2pts

14. :::TOIDEVE::: 4pts

15. :::CASHIO::: 2pts

16. :::DYSHOW::: 4pts





Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:48pm On Nov 14, 2013
I am now on 12 points!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:49pm On Nov 14, 2013
doubleDx:

That was the error, it's still in my sent folder to richiez! Well, with the permission of other quiz masters, I'd like them to give you your points.....
please consider me too now...i thought the same like smurfy...please nah...thought it was just a kind of distraction
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 1:49pm On Nov 14, 2013
Richiez: SCORE CARD FOR ROUND 3 2nd Question

1. :::JARYEH::: 10pts

2. :::DENNIECE1::: 12pts

3. :::IDENYIJOSHUA::: 10pts

4. :::PAPINDINHO::: 2pts

5. :::DR.GBOY::: 8pts

6. :::FACTORIAL1::: 12pts

7. :::AYSUCCESS99::: 12pts

8. :::MIRACY::: 2pts

9. :::KENDZYMA::: 10pts

10. :::LOGODWHIZ::: 10pts

11. [url=https://www.nairaland.com/amazing%20angel]:::AMAZING ANGEL:::[/url] 10pts

12. :::SMURFY::: 12pts

13. :::MOZARINIA::: 2pts

14. :::TOIDEVE::: 4pts

15. :::CASHIO::: 2pts

16. :::DYSHOW::: 4pts





Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:49pm On Nov 14, 2013
Next Question is by Quiz master Richiez

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?

You have just 10 mins!!!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:50pm On Nov 14, 2013
Richiez: Question 4 ...still by Quiz master Doubledx

If the roots of the quadratic expression x2 + Qx + 24 = 0 are α and ß respectively and the sum of their squares is 73, which of the following MUST be true about the values of x?

1. (x2 + 3) > 10
2. (2x - 3) < 0
3. x2 > 120

(remember, more than one option may be the correct answer)

just 10 mins!!! time is ticking

Solution
============================

The roots of the equation x2 + Qx + 24 = 0 are α and β
x2 + Qx + 24 = 0 ....eqn(1)

Then, x = α or x = β
To form the equation
(x - α)(x - β) = 0
x2 - xβ - xα + αβ = 0
x2 - x(α + β) + αβ = 0 .....eqn (2)
x2 + Qx + 24 = 0 .....eqn (1)
Comparing equations (1) & (2), the coefficient of x can be equated as follows.

Qx = - x (α + β)
(α + β) = -Q ...eqn(3)
Equating the constants
αβ = 24 .....eqn(4)

We know that => α2 + β2 = 73 = (α + β)2 - 2αβ
(α + β)2 - 2αβ = 73 ....eqn(5)

Now, substitute the values of (α + β)....eqn(3) and αβ...eqn (4) in eqn(5).
(α + β)2 - 2αβ = 73
(-Q)2 - 2(24) = 73
Q2 - 48 = 73
Q2 = 73 + 48
Q2 = 121
Q = ±√121
Q = ±11

Hence the equation becomes =>

x2 + 11x + 24 = 0 or x2 - 11x + 24 = 0

Which after factoring yields=>

x = -3 and x = -8, and also for the second equation x = 3 or 8

Thus =>

Statement 1 is true for both equations.
Statement 2 is true for the first equation.
Statement 3 cannot be true for any of the equations.

Hence, the answer is 1 and 2.

Anyone who chooses any of 1 and 2 is correct!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:51pm On Nov 14, 2013
smurfy: I am now on 12 points!
congrats to you jawe....nice play and good speed,accuracy and tactics(techniques).kudos to you jawe.
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 1:52pm On Nov 14, 2013
Richiez: Next Question is by Quiz master Richiez

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?

You have just 10 mins!!!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Ladokun12(m): 1:53pm On Nov 14, 2013
Fynestboi: Where kendyzma
.mr finest,na low b3 i dey batl wit rit nw,drz no point in cntinuein again,though me dy try am o,til my b3 runs dwn
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 1:59pm On Nov 14, 2013
Oga mi sir, on ur bluetooth, Mai plug the phone for you heregringrin
Ladokun12: .mr finest,na low b3 i dey batl wit rit nw,drz no point in cntinuein again,though me dy try am o,til my b3 runs dwn
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by jackpot(f): 1:59pm On Nov 14, 2013
Hint to Richiez question! : -X

find the sum of the AP with a=101 as the first term, common difference d=3 and the number of terms n=300 cheesy



**just passing ooo** wink
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Nobody: 1:59pm On Nov 14, 2013
Question 18
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 2:00pm On Nov 14, 2013
Rhetorical question, av sent my ans. though Lolz.
Richiez: Next Question is by Quiz master Richiez

What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?

You have just 10 mins!!!
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by Richiez(m): 2:02pm On Nov 14, 2013
Time Is UP!!!

Hold on while I post the solution and the score card
Re: Nairaland Math Quiz Winner l::::::JARYEH::::::l by factorial1(m): 2:03pm On Nov 14, 2013
hahaha ma'am u dey do ojoro o, na gurus' dey here, dey fit know am nah...Lolz
jackpot: Hint! :

find the sum of the AP with 101 as the first term and the number of terms n=300 cheesy



**just passing ooo** wink

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