2 + 2 = 5 ( Silly puzzle of the Day) [SOLUTION ADDED]
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In a "Real" world, there are a lot of people, who takes 2 with 2 and make it a 5 Well the silly question is, Can a "mathematician in you" also do this ? TAKE two 2's and any number of mathematical operations AND make it EQUAL TO 5 Another question to ponder , Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down? * there is no genius in google-dept Solution here[^]
Omit Needless Words - Strunk, William, Jr.
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Web based project trackingIst one sqrt( (.2) ^ (-2) ) [^] i can hear your "huh!" 2nd one as some of you have already guessed the mirror just reflect and our eye see the image horizontally . The reason why it appears to reverse left/right is because of the symmetry of our body. nice weekend
Omit Needless Words - Strunk, William, Jr.
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Out of curiosity, where are all these puzzles coming from? Have you bought a book?
Omit Needless Words - Strunk, William, Jr.
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Quartz... wrote:
Why is it that the mirror appears to reverse left and right, but not up and down?
The mirror doesn't rotate anything. It reflects the image back without any rotation about any axis. A human observer looking at you from the mirrors location would have to rotate about his vertical axis, thus reversing his left and right from your perspective
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Quartz... wrote:
But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down?
looking into a flat mirror reverses the Z axis, mentally: what points at the mirror in real life points out in the reflection. so we assume the reflection is of a person facing us, which would put his right arm on our left side, because that's true for real people facing us... but, it's not a person facing us, and it doesn't actually swap left and right. and it doesn't appear to swap up and down because we don't assume people facing us are upside down. but we do assume people facing us have their left on our right. we're just fooled by our assumptions.
Quartz... wrote:
2 with 2 and make it a 5
no time for such foolishness. it's 5:30! time to go home!
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Can't remember the exact solution but I'm pretty sure it involves multiplying by infinity, adding something or other (because infinity + x is infinity) then cancelling out the infinities resulting in the imbalanced equation. I think anyway :scratches head:
I have no idea what I just said. But my intentions were sincere.
Omit Needless Words - Strunk, William, Jr.
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Quartz... wrote:
In a "Real" world, there are a lot of people, who takes 2 with 2 and make it a 5
Use extreamly large values of 2! Joe Q
Omit Needless Words - Strunk, William, Jr.
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i haven't checked that but seems to be a good solution if it is accurate Solution here[^]
Omit Needless Words - Strunk, William, Jr.
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I really wish that only well-worded puzzles were posted. If this is from a book, please post the full, complete, exact text of the puzzle. Plus attribution would help.
Omit Needless Words - Strunk, William, Jr.
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In a "Real" world, there are a lot of people, who takes 2 with 2 and make it a 5 Well the silly question is, Can a "mathematician in you" also do this ? TAKE two 2's and any number of mathematical operations AND make it EQUAL TO 5 Another question to ponder , Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down? * there is no genius in google-dept Solution here[^]
Omit Needless Words - Strunk, William, Jr.
JumpyForum:CP Message board | Universal DBA | Ajax Rating | ExplorerTree | | Globalization in 20 minutes
Web based project trackingQuartz... wrote:
TAKE two 2's and any number of mathematical operations AND make it EQUAL TO 5
:zzz: log4^(1/5)(2+2) = 5 :cool: or, I think you could define group with only {2}, and call zero element "5". Then 2-2 = 5 :D
"Throughout human history, we have been dependent on machines to survive. Fate, it seems, is not without a sense of irony. " - Morpheus
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Ist one sqrt( (.2) ^ (-2) ) [^] i can hear your "huh!" 2nd one as some of you have already guessed the mirror just reflect and our eye see the image horizontally . The reason why it appears to reverse left/right is because of the symmetry of our body. nice weekend
Omit Needless Words - Strunk, William, Jr.
JumpyForum:CP Message board | Universal DBA | Ajax Rating | ExplorerTree | | Globalization in 20 minutes
Web based project trackingQuartz... wrote:
The reason why it appears to reverse left/right is because of the symmetry of our body.
Symmetry has nothing to do with it. Perspective has everything to do with it.
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Ist one sqrt( (.2) ^ (-2) ) [^] i can hear your "huh!" 2nd one as some of you have already guessed the mirror just reflect and our eye see the image horizontally . The reason why it appears to reverse left/right is because of the symmetry of our body. nice weekend
Omit Needless Words - Strunk, William, Jr.
JumpyForum:CP Message board | Universal DBA | Ajax Rating | ExplorerTree | | Globalization in 20 minutes
Web based project trackingUm, where's the +? Besides what's so strange about that one? .2 = 1/5 (1/5)^(-2) = 5^2 sqrt(25)=5 The one I was on about is where there's a proof that 1=2.
I have no idea what I just said. But my intentions were sincere.
-
In a "Real" world, there are a lot of people, who takes 2 with 2 and make it a 5 Well the silly question is, Can a "mathematician in you" also do this ? TAKE two 2's and any number of mathematical operations AND make it EQUAL TO 5 Another question to ponder , Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down? * there is no genius in google-dept Solution here[^]
Omit Needless Words - Strunk, William, Jr.
JumpyForum:CP Message board | Universal DBA | Ajax Rating | ExplorerTree | | Globalization in 20 minutes
Web based project tracking