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48÷2(9+3) = ?
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| April 15th, 2011 at 4:30:51 AM permalink | |
| iamthepush Member since: May 26, 2010 Threads: 5 Posts: 65 | Apperently there is some confusion as to the answer of this question. What say you WOV memebers?  |
| April 15th, 2011 at 4:40:23 AM permalink | |
| JIMMYFOCKER Member since: Jan 24, 2011 Threads: 12 Posts: 339 | 288 is my answer |
| April 15th, 2011 at 4:45:30 AM permalink | |
| weaselman Member since: Jul 11, 2010 Threads: 17 Posts: 1921 | Operations of the same priority are performed left-to-right. The answer is 288. "When two people always agree one of them is unnecessary" |
| April 15th, 2011 at 5:08:01 AM permalink | |
| DJTeddyBear Member since: Nov 2, 2009 Threads: 105 Posts: 5714 | 288. But what's most interesting is that different models from the same brand calculator have conflicting answers. I would have expected, if anything, that the brands would differ, but all models from one brand would have the same result. Very interesting..... Superstitions are silly, childish, irrational rituals, born out of fear of the unknown.
But how much does it cost to knock on wood? |
| April 15th, 2011 at 6:26:40 AM permalink | |
| weaselman Member since: Jul 11, 2010 Threads: 17 Posts: 1921 |
TI-85 had a bug, that got fixed in next version - TI-86 "When two people always agree one of them is unnecessary" |
| April 15th, 2011 at 6:44:41 AM permalink | |
| Paigowdan Member since: Apr 28, 2010 Threads: 54 Posts: 2112 | See: the order of precidence. This is embarrassing for us. (Resolve first (nested) parens [and brackets])) Planet math: http://planetmath.org/?op=getobj&from=objects&id=3951 Wiki (Hi, Bob!) http://en.wikipedia.org/wiki/Order_of_operations Gambling doesn't build character, it reveals..no character. But a lot of characters. |
| April 15th, 2011 at 6:45:35 AM permalink | |
| pacomartin Member since: Jan 14, 2010 Threads: 545 Posts: 6198 |
Wikipedia entry: An expression like 1/2x is interpreted as 1/(2x) by TI-82, but as (1/2)x by TI-83. While the first interpretation may be expected by some users, only the latter is in agreement with the standard rules The TI-82 is a graphing calculator made by Texas Instruments. The TI-82 was designed in 1993 as a stripped down, more user friendly version of the TI-85. Did you ever notice that Excel interprets -3^2 as +9 and not -9? Wine loved I deeply, dice dearly -Edgar, betrayed son of Gloucester in King Lear |
| April 15th, 2011 at 8:49:06 AM permalink | |
| weaselman Member since: Jul 11, 2010 Threads: 17 Posts: 1921 |
That is correct. Unary operators have the highest precedence. "When two people always agree one of them is unnecessary" |
| April 15th, 2011 at 8:49:49 AM permalink | |
| Wizard Administrator Member since: Oct 14, 2009 Threads: 313 Posts: 6771 | I go with 288 also. An argument could be made, I say incorrectly, for doing the multiplication before the division, per the Please Excuse My Dear Aunt Sally rule. This is a memory device for the order of operations. It would suggest doing parenthesis first, then exponents, then multiplication, then division, then subtraction, and addition last. Where this is not quite right is multiplication and division are equal in priority, as well as addition with subtraction. When both are present, you go left to right. So somebody who took the PEMDAS method literally would do 48 / 2(9+3) = 48/2*12 = 48/24 = 2. I agree up to the 48/2*12. Since multiplication and division are equal, you do the left operand first, or 48/2*12 = 24*12 = 288. It's not whether you win or lose; it's whether or not you had a good bet. |
| April 15th, 2011 at 9:05:28 AM permalink | |
| dm Member since: Apr 29, 2010 Threads: 14 Posts: 699 | I go with 2. If 288 is wanted then write it (48/2)(9+3) |
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