Interesting Algebra Problem | PEMDAS and BODMAS | College Entrance Exam

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Interesting Algebra Problem | PEMDAS and BODMAS | College Entrance Exam

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[Offical_ThomasShelby]

Mind blowing problem
It's seems easiest problem but doing practically becomes complicated.
But thanks for simple Reminding me about BODMAS❤

[j.r.]

People like to argue that multiplication indicated by parentheses must come before multiplication indicated by a * or x sign. In other words, they mistakenly believe that the priority assigned to operations *inside* parentheses also applies to operations immediately *outside* parentheses. I've had this argument right here in this comment section in the past. Thanks for covering this topic clearly again, but my guess is that it won't be the last time you'll have to do it.

[alster]

Super easy!!!!

Got it in less than a minute.

Same drill, solved on my own after seeing the thumbnail and fast forwarded to double check if my answer is correct which turns out it did.


Cheers from the Philippines and Happy Valentines' Day🇵🇭

[Mike-H_UK]

Although you are undoubtedly correct, my concern with these problems is that they foster correctness over really thinking what someone actually means. For example, when someone writes 10/2A, how many times do they actually mean 5A? It's fine to say 'I was right' when then rocket fails to reach the ;-)

[neilgerace]

The second best way to deal with these is to write the signs explicitly. The best way is to do that and also eliminate the parentheses altogether.

[HappyFamilyOnline]

Beautiful presentation👍
Thanks for sharing😊

[Copernicusfreud]

Yay! I solved it and without a pen, paper or calculator.

[sameerqureshi-khcc]

You ARE a life saver! Love from Pakistan 😊👍🇵🇰

[yalchingedikgedik]

Very well explained Sir .
Thanks for you .

[johnspathonis]

Who in their right mind would lay out an equation in practice like this knowing the confusion that may occur. A judicious use of brackets would solve this. I put the equation into MS Excel and it failed. It stated there was a syntax error. It needed a multiplication sign between the 6 and the brackets. Insead of labouring over a rule, the emphasis should be put into better writing skills.

[lewiscoacher]

All confusion falls away when we supply the missing parentheses around 378 divided by 6. The conventional rules of order are made by us and are enforceable by us, and don't have to make sense in order to work. The formula here is like a "nude" legal document which, having more than 1 possible interpretation, can't be trusted until clarified as to which meaning. We're discussing convention as
if it is more than merely convention.

[sr]

A question. There are two differences division signs in this equation. The division sign (a line with two dots). And also the long line . With the PEDMAS and BODMAS rules you described if you replace the bottom 7 with 9 - 2 without brackets would this change the answer to 69?

[GirGir]

PEMDAS and BODMAS seem to be at odds with one another here. Does multiplication come b4 division, or the other way around? Pemdas gives you 9 as the answer, Bodmas gives you 90.

[massimogranzotto]

Sempre interessante professore.
Grazie

[claudiaschartmann]

1) 378/7=54 --- 2) 54/6=9 ---- 3) 9×10=90 . 🙂👍

[notunkori]

If x^3-1/x^3=22sqr2 then what will be the value of x^2+1/x^2=?
Sir I badly need this solution. So publish very soon

[dakeypunchar]

We can't multiply with the denominator. I did it first try

[musicsubicandcebu]

This division sign should be avoided altogether. I only see it used in tests like these, never anywhere else.

[rajveerkumar]

what will be the answer of (378÷(102-42)) /7

[nineko]

Alternatively, you can see the division by 6 as a multiplication by ⅙, and turn the fraction into 3780/42 (which is still 90 of course). Bonus points because it would feature the number 42, which is the answer to everything.