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General => General discussion => Topic started by: dTEA on 11 February 2013, 11:01
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4x4+4x4+4-4x4=???
Anyone want to show their workings??
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336
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20
4x4+4x4=32
+4=36
-4x4=20
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320
The one above seems wrong, i was taught that for that to be correct it would have to be (4x4)+(4x4)
So you'd have to work each sum out first and then add them together.
But there's no brackets anywhere so literately must just have to do it how it looks. Could easily be wrong though.
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Thats how I done it, no brackets so say it as you see it.
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20
4x4+4x4=32
+4=36
-4x4=20
This
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BIDMAS.
Cant be botherd to work it out though, its monday, i dont do thinking on monday
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320
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320
How?
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320
How?
4x4(16)+4(20)x4(80)+4(84)-4(80)x4(320)
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20 here for me lol
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320
How?
4x4(16)+4(20)x4(80)+4(84)-4(80)x4(320)
:afro:
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260 with BODMAS?
4*4*4*4+4+4-4=260
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20
4x4+4x4=32
+4=36
-4x4=20
This
+1
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320
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as said it would only be 20 if the sums were in (brackets)
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it's 20
the only way you can make it anything other than 20 is inferring some imaginary brackets e.g.320
How?
4x4(16)+4(20)x4(80)+4(84)-4(80)x4(320)
which is actually (((((4x4)+4)x4)+4)-4)x4
the correct way is to do the multiplication then the addition / subtraction
4x4+4x4+4-4x4=???
+16
+16
+4
-16
the +16 and -16 cancel out so you're left with +16+4 = 20
put it into any decent calculator and you get the same result.
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^ correct by my reckoning as well. Had forgot how to do this tho, and I wondered what excel would make of it...
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I put it into the calculator straight away as it was down and it came up with 20. All this talk of brackets is making my head sore.
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260 with BODMAS?
4*4*4*4+4+4-4=260
That's not how you use bodmas.
Bodmas means you follow the order which is:
1. Brackets - none here
2. Order - none here
3. Divisions - none here
4. Multiplications
4x4+4x4+4-4x4 becomes 16+16+4-16
5. Addition
16+16+4-16 becomes 36-16
6. Subtraction
36-16=20
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IMO due to the lack of brackets defining the actual sums both 20 and 320 are correct...
Neither is wrong but neither is right as the perimeters of the sum have not been defined... :P :P :P
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IMO due to the lack of brackets defining the actual sums both 20 and 320 are correct...
Neither is wrong but neither is right as the perimeters of the sum have not been defined... :P :P :P
No you are wrong :tongue: :tongue: :tongue:
Swap the number 4 for 1
so
4x4+4x4+4-4x4 => 1x1+1x1+1-1x1
because you only have 1x it's the same as 1+1+1-1 which we all know is actually 3-1 = 2
anyone that still thinks the answer is anything other than 20 here's some primary school maths;
http://mathsblog.co.uk/2009/06/11/maths-worksheet-order-of-calculating-bodmas-1/
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320
How?
4x4(16)+4(20)x4(80)+4(84)-4(80)x4(320)
+1 for me. 320.
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Think OP thinks its 320
Well the answer has 3 digits anyway. :grin:
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No I don't. It's 20. :grin:
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12 :evil:
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20 :smiley:
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4 :huh:
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I got 20 too if you follow BIDMASS.
25 / 5 anyone :P
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There is only one answer! and it is... "42" :wink:
Thom
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I'm so bored with this thread.... :whistle: :whistle:
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There is only one answer! and it is... "42" :wink:
Thom
The Meaning of Life!
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There is only one answer! and it is... "42" :wink:
Thom
The Meaning of Life!
No flies on you Len...
Thom
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Well I liked Hitch Hikers Guide to the Galaxy quite a lot! :grin:
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Oh and of course it is actually the Meaning of Life, the Universe and EVERYTHING!
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80081E5
:grin:
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Oh and of course it is actually the Meaning of Life, the Universe and EVERYTHING!
Therefore, mine is the correct answer
Thom
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20 :nerd:
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Oh and of course it is actually the Meaning of Life, the Universe and EVERYTHING!
Therefore, mine is the correct answer
Thom
Indeed!
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Personally I just say 8" its golden always :tongue:
Didn't we have this awhile back and Len got stick for it :grin: