3 of 4 = 3*4
what is 3-2 (bar above this)??
Simplify..
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cans
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Frankenstein
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Hi,cans wrote:3 of 4 = 3*4
what is 3-2 (bar above this)??
the bar above that is called vinculum (just like a bracket. So that operation should be done before multiplication).
Last edited by Frankenstein on Sat Jun 04, 2011 9:08 pm, edited 1 time in total.
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vzzai
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Frankenstein is right. That 3-2 (bar above this)/vinculum should be dealt with first.
I did try 3*4 for 3 of 4 but I did not get the right answer. That's why I posted it for responses. Please help to clarify.
I did try 3*4 for 3 of 4 but I did not get the right answer. That's why I posted it for responses. Please help to clarify.
Thank you,
Vj
Vj
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Frankenstein
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Hi,vzzai wrote:Frankenstein is right. That 3-2 (bar above this)/vinculum should be dealt with first.
I did try 3*4 for 3 of 4 but I did not get the right answer. That's why I posted it for responses. Please help to clarify.
Even I am getting a value, which is not in the given options.
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cans
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but don't we consider 'of' as multiplication??
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Frankenstein
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Hi,cans wrote:but don't we consider 'of' as multiplication??
Not sure about this. As I keep exploring more about 'Of', I am getting more doubts on it. Will post about it when I am clear.
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Frankenstein
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Can you post the Source or OE ?vzzai wrote:
OA D
Please let me know if 3 of 4 should be considered 3*4 or 3/4 or 4^3
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cans
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2 - 3of4 + 4/(3-2)*4 + 1/2of4 -6*4/2of7
solving brackets and of first
2 - 12 + 4/1*4 +1/8 - 6*4/14
2 - 12 + 4*4 + 1/8 - 24/14
2 - 12 + 16 + 1/8 - 12/7
6 + (-89)/56
(336-89)/56
247/56
IMO D
3of 4 means 3*4
solving brackets and of first
2 - 12 + 4/1*4 +1/8 - 6*4/14
2 - 12 + 4*4 + 1/8 - 24/14
2 - 12 + 16 + 1/8 - 12/7
6 + (-89)/56
(336-89)/56
247/56
IMO D
3of 4 means 3*4
If my post helped you- let me know by pushing the thanks button
Contact me about long distance tutoring!
[email protected]
Cans!!
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cans
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2 - 3of4 + 4/(3-2)*4 + 1/2of4 -6*4/2of7
solving brackets and of first
2 - 12 + 4/1*4 +1/8 - 6*4/14
2 - 12 + 4*4 + 1/8 - 24/14
2 - 12 + 16 + 1/8 - 12/7
6 + (-89)/56
(336-89)/56
247/56
IMO D
3of 4 means 3*4
solving brackets and of first
2 - 12 + 4/1*4 +1/8 - 6*4/14
2 - 12 + 4*4 + 1/8 - 24/14
2 - 12 + 16 + 1/8 - 12/7
6 + (-89)/56
(336-89)/56
247/56
IMO D
3of 4 means 3*4
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Contact me about long distance tutoring!
[email protected]
Cans!!
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Cans!!
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Frankenstein
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Hi,
Good that we arrived at the answer but I am still not convinced about 'of' being a multiplication symbol as well as having more priority than normal multiplication. I will edit my opinion about 'of' in my earlier post else it could mislead viewers. I see spammed posts in many threads. I humbly request everyone not to post the same thing twice.
Good that we arrived at the answer but I am still not convinced about 'of' being a multiplication symbol as well as having more priority than normal multiplication. I will edit my opinion about 'of' in my earlier post else it could mislead viewers. I see spammed posts in many threads. I humbly request everyone not to post the same thing twice.
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cans
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BODMAS rule - Bracket, Of, Division, Multiplication, Addition, Subtraction
Thus of has higher priority then normal multiplication.
And I didn't post the same thing twice. (some problem with my connection)
Thus of has higher priority then normal multiplication.
And I didn't post the same thing twice. (some problem with my connection)
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Frankenstein
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Hi,cans wrote:BODMAS rule - Bracket, Of, Division, Multiplication, Addition, Subtraction
Thus of has higher priority then normal multiplication.
And I didn't post the same thing twice. (some problem with my connection)
I agree with you about the BODMAS rule for priority of 'Of'. But, everywhere I have come across, I see 'Of' as 'Orders'(exponents) and not multiplication. That was my point. If you can reveal any source that states 'Of' as multiplication in BODMAS, it would be really helpful.
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You will NEVER see that language on the GMAT - so don't worry about it.vzzai wrote:
OA D
Please let me know if 3 of 4 should be considered 3*4 or 3/4 or 4^3
Pretty much the only time you'll see "of" and need to translate into math will be with fractions or percents, e.g.
"What number is 20% of 90?"; or
"What number is 1/5 of 90?"
"of" does translate as multiplication, but you'll never see it between two integers (at least on the GMAT or, to the best of my knowledge, in any North American math).
Also, in North America the order of operations mnemonic is BEDMAS, with "E" standing for "exponents". (Another variation is PEMDAS - parenthesis/brackets are the same thing.)
So, the moral of the story is: don't use this source when studying for the GMAT, since it contains language that will confuse GMAT takers (and since the authors didn't properly research the GMAT before constructing their questions).
Stuart Kovinsky | Kaplan GMAT Faculty | Toronto
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