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#1
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Sat (test) Question
This is a math question for you all math people out there.
The sum of the positive odd integers less than 50 is suntracted from the sum of the positive even integers less than or equal to 50. What is the resulting difference? A: 0 B: 25 C: 50 D: 100 E: 200 PS: I got the answer, post your answer and I'll tell you if you get it right or not.
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#2
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0?
Chris
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#3
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it just ends up being 1+1+1+1 til you get to 25.
Answer B
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#4
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Answer: B = Luckz niice job.
Explanation: The sum of the positive odd integers less than 50 is 1 + 3 + 5 + --- + 45 + 47 + 49, and the sum of the postive even integers less then or equal to 50 is 2 + 4 + 6 + --- + 46 + 48 +50. When the first sum is suntracted from the second, the terms can be regrouped to form ( 2 - 1) + (4 - 3) + --- + (48 - 47) + (50 - 49), which is just 1 + 1 +1 + --- + 1 where there are 25 ones. Therefore, the correcr answer is 25.
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#5
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Another SAT TEST QUESTION
The length of rectangle S is 20 percent longer than the length of rectangle R, and the width of rectangle S is 20 percent shorter than the width of rectangle R. The area of rectangle S is? A: 20% greater than the area of rectangle R B: 4% greater than the area of rectangle R C: equal to the area of rectangle R D: 4% less than than the area of rectangle R E: 20% less than the area of rectangle R PS: I got the answer, post your answer and I'll tell you if you get it right or not.
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#6
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C and/or E?
Mostly C... Chris
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Intel Core Duo E7300 2.66GHz // SuperTalent DDR2 800 2GB // ASUS nVidia GeForce 8400GS 512MB // Western Digital 7200RPM 320GB SATA // LG GH-20LS 20X SATA DVD-RAM // Windows XP Pro 32-bit // Thermaltake XP550 NP 430W // Thermaltake SOPRANO SECC Black |
#7
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Try again.
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#8
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D?
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#9
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Quote:
Chris
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Intel Core Duo E7300 2.66GHz // SuperTalent DDR2 800 2GB // ASUS nVidia GeForce 8400GS 512MB // Western Digital 7200RPM 320GB SATA // LG GH-20LS 20X SATA DVD-RAM // Windows XP Pro 32-bit // Thermaltake XP550 NP 430W // Thermaltake SOPRANO SECC Black |
#10
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Nooooo! Not maths! GET AWAY FROM ME!
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#11
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Correct Mike nice job.
Explanation: Represent the length and width of rectangle R as x and y. Then the area of R is xy. the length of rectangle S is 20% longer than x, which is x + 0.20x, or 1.2x. Similarly, the width of S is y - 0.20y, or 0.8y. The area of S is (1.2x) (0.8y), which simplifies to 0.96xy. From this it follows that the area of rectangle S is 4% less than the area of rectangle R.
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#12
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i got an SAT question
Sally has two dogs, Bob has five fish, and Chris has 3 parrots. How many pounds of bacon does Charlie need to buy on Saturday?
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#14
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lol, yea really?
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-------------------------------------------------------------------------------- quote: Originally posted by J-Factor New England's Largest And Finest Traveling Amusement Park |
#15
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ok i got a math problem for you guys......if you can have 3 seperate numbers, and each number can be any number between 1 and 60 how many different number variations can you have?
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#16
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Quote:
i mean why buy pork when there a whole world of beef to buy out there. beefy. Eggs, beef, coffee, fry potato's to eat in the morning.
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* altnews sources [getmo & others news] not found main FNN: realrawnews.com *Discord: Unknown77#7121 Playing now days: EA Games> swtor [star wars old republic] |
#17
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Quote:
-60x-60=-3600 720000 ways plus and minus or -3600 0 +3600 total 720.000 ways and there the infinite number system, i not even going to go there it would be unlimited numbers to count up to
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* altnews sources [getmo & others news] not found main FNN: realrawnews.com *Discord: Unknown77#7121 Playing now days: EA Games> swtor [star wars old republic] Last edited by Hellfighter; 01-19-2007 at 03:00 AM. |
#18
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Quote:
60 * 59 * 58 = 205320 different combinations
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