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90 % Would Fail This Question by Jobbermancom: 11:51am On Jan 11, 2013 |
6 / 2 ( 1 + 2 ) = ?
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Re: 90 % Would Fail This Question by Geewan(m): 12:01pm On Jan 11, 2013 |
9 1 Like |
Re: 90 % Would Fail This Question by austinemar: 12:02pm On Jan 11, 2013 |
Na so u dull?....9 jor |
Re: 90 % Would Fail This Question by hrmgr: 12:08pm On Jan 11, 2013 |
the answer is 9 |
Re: 90 % Would Fail This Question by roga: 12:12pm On Jan 11, 2013 |
9 |
Re: 90 % Would Fail This Question by Fudey(f): 12:15pm On Jan 11, 2013 |
1 is d correct answer 3 Likes |
Re: 90 % Would Fail This Question by Obinoscopy(m): 12:20pm On Jan 11, 2013 |
To me, I think the answer is subjective. It depends on what is the function between 2 and (1+2). If it is 'of' function, then the answer is 1 but if it is 'multiplication' function then the answer is 9 Working: 6 ÷ 2 of (1+2) = 6 ÷ 2 of 3 = 6 ÷ 6 = 1 if the function is 'of' OR 6 ÷ 2 * (1+2) = 6 ÷ 2 * 3 = 3 * 3 = 9 if the function is 'multiplication' |
Re: 90 % Would Fail This Question by hakunajay(m): 1:00pm On Jan 11, 2013 |
Obinoscopy: To me, I think the answer is subjective. It depends on what is the function between 2 and (1+2). If it is 'of' function, then the answer is 1 but if it is 'multiplication' function then the answer is 9 Ol' boy see Euler o... You are so great that you never knew that 'of' is actually translated to 'times' or multiplication in Mathematics? The answer is 1. 2 Likes |
Re: 90 % Would Fail This Question by Obinoscopy(m): 1:10pm On Jan 11, 2013 |
hakunajay: They might be the same to a layman but they are not the same to a mathematician. Remember BODMAS. The O stands for 'of' while the M stands for 'multiplication' or 'times'. Thus 'of' comes before 'division' which in turn comes before 'multiplication' So my brother the fact remains that 'of' is different from 'multiplication'. That explains why they are placed differently in the BODMAS organogram. Get my drift? 2 Likes |
Re: 90 % Would Fail This Question by hakunajay(m): 3:16pm On Jan 11, 2013 |
Obinoscopy: okay. how will you solve this? 1/3 of 9? pls give me solution then i will continue from there. |
Re: 90 % Would Fail This Question by Geewan(m): 3:39pm On Jan 11, 2013 |
6 / 2 ( 1 + 2 ) = ? Explanation: Using BODMAS (Bracket Of Division, multiplication, addition and subtraction) B = treat bracket (Parenthesis) first: 6 / 2 * 3 DM = treat division and multiplication from left to right (please note from left to right): 3 * 3 Since there is no need for addition and subtraction, the answer is therefore = 9. |
Re: 90 % Would Fail This Question by Obinoscopy(m): 4:21pm On Jan 11, 2013 |
hakunajay: Sorry do you mean 1 ÷ 3 of 9 or one third of 9? If the former, applying BODMAS 'of' comes before 'division' thus it would be: 1 ÷ [3 of 9] = 1 ÷ 0.333... = 3 If later, then its simple a fraction times an integer. Thus there would even be no need need for BODMAS since its just two numbers with a function in between: 1/3 of 9 = 1/3 * 9 = 3 Both answers gives us 3. However that won't be the case for 3/2 of 2 and 3 ÷ 2 of 2. The solution to the former is 3 while the answer to the later is 3/4. Get my drift? |
Re: 90 % Would Fail This Question by kinggenesis(m): 4:33pm On Jan 11, 2013 |
Forget all these grammerz.........The answer is 1. If you don't agree to that answer, then you need to start again from Prim. 1 Or better still, come and get the map and drive to hell. |
Re: 90 % Would Fail This Question by hakunajay(m): 4:42pm On Jan 11, 2013 |
Geewan: 6 / 2 ( 1 + 2 ) = ? You guys dont get it, do you? Ask yourself this question.. what is the usefulness of bracket in relation to the coefficient? Dont you realise that 6 can be written as 2(1+2)? Just like writing 6a as 2(a+2a). so the coefficient in the question 6/2(1+2), is attached to whatever is in the brackets and therefore can not be touched without FULLY considering the operation joining it with whatever is in the brackets. Further analysis.... Let rewrite 6a as 2(a+2a). Correct? Now, divide this whole lots by 6. Hence, 6/2(a+2a).... Using BODMAS, take care of whatever is in the brackets, therefore we will have 6/2(3a) taking away the brackets yields * hence we have, 6/2*3a leading to 6/6a which can now be easily divided. I am waiting to see your counter~proof/proofs. 2 Likes |
Re: 90 % Would Fail This Question by hakunajay(m): 4:56pm On Jan 11, 2013 |
Obinoscopy: Boss, do you know that you are contradicting yourself? i can simply show you different methods of solving this without using BODMAS and will yield same answer. Let me start with your example. 3/2 of 2. the of changes to x(times). and of course the answer is 3. Now for the 3÷2 of 2. the answer is not 3/4. do you know that i can replace that ÷ sign with x sign by inverting the first 2? this becomes 3x (1/2) of 2 hence, 3x (1/2) x2... which now gives you 3. Now do u get the REAL drift? Also, im humbled to tell you that one third is the same as 1/3, which is also the same as 1÷3. Take it anywhere. |
Re: 90 % Would Fail This Question by Obinoscopy(m): 4:59pm On Jan 11, 2013 |
hakunajay: On the bolded, do you know that 6/2*3a is different from 6/(2*3a)? The problem is that you don't appreciate the importance of BODMAS and the technical difference between 'of' and * |
Re: 90 % Would Fail This Question by Obinoscopy(m): 5:03pm On Jan 11, 2013 |
hakunajay: I'm sorry but you are catastrophically wrong on the bolded. I'd bet a million naira on this! Its obvious you are not a fan of BODMAS!! |
Re: 90 % Would Fail This Question by Obinoscopy(m): 5:29pm On Jan 11, 2013 |
And for the records I never said the answer the OP's question was not 1. All I said that the answer is 1 if the function between 2 and (1+2) is 'of'. But if the function between 2 and (1+2) is * then the answer is 9. Regards |
Re: 90 % Would Fail This Question by ayokenny37(m): 5:48pm On Jan 11, 2013 |
[quote author=]6 / 2 ( 1 + 2 ) = ?[/quote] From bodmas, open brackets 1st so d answer is 1 |
Re: 90 % Would Fail This Question by Geewan(m): 10:02pm On Jan 11, 2013 |
hakunajay: Try using PEMDAS Where P = Parenthesis E = Exponents M = multiplication D = Division NB: Order of multiplication and division is from left to right. A = Addition S = subtraction NB: Order of addition and subtraction is from left to right. Source: GMAT 2012 pg 226. |
Re: 90 % Would Fail This Question by hakunajay(m): 10:50pm On Jan 11, 2013 |
Geewan: And if PEMDAS is used, what will the answer be? |
Re: 90 % Would Fail This Question by Geewan(m): 11:23pm On Jan 11, 2013 |
9
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Re: 90 % Would Fail This Question by Obinoscopy(m): 11:26pm On Jan 11, 2013 |
Hakunajay I want u to google this: 6/2(1+2) and tell me the answer the google calculator gave you (it gave me 9!). Also I want you to click this link and read its content extensively: http://www.askamathematician.com/2011/04/q-how-do-you-calculate-6212-or-48293-whats-the-deal-with-this-orders-of-operation-business/ The point I'm trying to establish here is that the problem with questiom lies with definition of terms. There is no solid mathematical rule governing what fxn shld be btw 2 and (1+2). That explains the confusion. Some say the answer is 1 others say 9. Some even say 6 ÷ 2(1+2) is different from 6/2(1+2). Others argue that 6/2(1+2) should not be confused with 6/[2(1+2)]. I know the side u are on But that doesn't mean the guys on the other side are wrong. Unless we mathematicians all come together and define these rules and notations properly, the confusion would persist. Kind regards |
Re: 90 % Would Fail This Question by Nobody: 11:58pm On Jan 11, 2013 |
Obinoscopy: Hakunajay I want u to google this: 6/2(1+2) and tell me the answer the google calculator gave you (it gave me 9!). Also I want you to click this link and read its content extensively: http://www.askamathematician.com/2011/04/q-how-do-you-calculate-6212-or-48293-whats-the-deal-with-this-orders-of-operation-business/@obinoscopy the answer is one my reason is 6/2(2+1)=6/2(3)=3/3 (u either say 6/2 b4 dividing by 3)=6/6( or u multiply the denominator 2(3) b4 dividing)=1 |
Re: 90 % Would Fail This Question by Obinoscopy(m): 12:11am On Jan 12, 2013 |
masperano: You are right. But the guy who got 9 is right as well! The rules guiding Binary Operation is kinda ambigious and incomplete thus the confusion. Type 6/2(1+2) in google and see what answer the google calculator will give u |
Re: 90 % Would Fail This Question by oyinmama(f): 10:27pm On Mar 30, 2013 |
So which is the correct answer: 9 or 1?? |
Re: 90 % Would Fail This Question by Obinoscopy(m): 8:24am On Mar 31, 2013 |
oyinmama: So which is the correct answer: 9 or 1??Good question! |
Re: 90 % Would Fail This Question by haibe(m): 11:29am On Mar 31, 2013 |
@op do u mean: 6÷2(1+2) or 6/2(1+2) i.e 6 over 2(1+2)? For the former applying bodmas, the ans is 1, opening the bracket 2(1+2), we have 6, thus 6÷6=1 For the latter( bodmas need not be applied since only multiplication is the key and 6/2 is seen as a fraction and not two whole numbers dividing.), the ans is 6 over 2 * (1+2)=9. So 6 over 2=3 * (1+2)=3, thus 3*3=9.. Note: For the former, 6÷2(1+2), 2 is joined with the bracket (1+2) but for the latter we have 6/ 2 as a fraction multiplied by 3 which gives 9. So depending on the op's use of sign the ans may vary. |
Re: 90 % Would Fail This Question by Nobody: 1:51am On Dec 07, 2014 |
Answer is 1. Use BODMAS. |
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