Gemmel Posted 6 March, 2015 Share Posted 6 March, 2015 This popped up on my linkedin and has beaten me.... 3 + 4 = 19 5 + 6 = 41 1 + 3 = ? Link to comment Share on other sites More sharing options...
Bearsy Posted 6 March, 2015 Share Posted 6 March, 2015 7.. Link to comment Share on other sites More sharing options...
Verbal Posted 6 March, 2015 Share Posted 6 March, 2015 =10 Link to comment Share on other sites More sharing options...
rallyboy Posted 6 March, 2015 Share Posted 6 March, 2015 10. But it wasn't easy! Link to comment Share on other sites More sharing options...
Bearsy Posted 6 March, 2015 Share Posted 6 March, 2015 69. Link to comment Share on other sites More sharing options...
jawillwill Posted 6 March, 2015 Share Posted 6 March, 2015 4. The first two are wrong. Idiot. Don't overthink, and always check your work. That's the moral of that LinkedIn discussion. Link to comment Share on other sites More sharing options...
rpb Posted 6 March, 2015 Share Posted 6 March, 2015 it's 7 Link to comment Share on other sites More sharing options...
pap Posted 6 March, 2015 Share Posted 6 March, 2015 6 If you add 2 to the second operand, you get:- 3 + 6 5 + 8 1 + 5 Doing that allows you do change the additions (which would never work to produce those results) for multiplications. 3 x 6 = 18 5 x 8 = 40 1 x 5 = 5 Adding 1 to the first two results gives you 19 & 41. Apply the same logic to the last result and you get 6. Link to comment Share on other sites More sharing options...
farawaysaint Posted 6 March, 2015 Share Posted 6 March, 2015 10 I am the fail though I had to look at a hint. Link to comment Share on other sites More sharing options...
farawaysaint Posted 6 March, 2015 Share Posted 6 March, 2015 6 If you add 2 to the second operand, you get:- 3 + 6 5 + 8 1 + 5 Doing that allows you do change the additions (which would never work to produce those results) for multiplications. 3 x 6 = 18 5 x 8 = 40 1 x 5 = 5 Adding 1 to the first two results gives you 19 & 41. Apply the same logic to the last result and you get 6. 3 + 4(4) = 19 5 + 6(6) = 41 1 + 3(3) = ? Link to comment Share on other sites More sharing options...
Saint Rees Posted 6 March, 2015 Share Posted 6 March, 2015 7. Multiply then add the sum Link to comment Share on other sites More sharing options...
pap Posted 6 March, 2015 Share Posted 6 March, 2015 3 + 4(4) = 19 5 + 6(6) = 41 1 + 3(3) = ? Or that, which is loads better Link to comment Share on other sites More sharing options...
Bearsy Posted 6 March, 2015 Share Posted 6 March, 2015 3 + 4(4) = 19 5 + 6(6) = 41 1 + 3(3) = ? IS IT NOT EQUALLY TRUE THAT 3+4+(3*4) = 19 5+6+(5*6) = 41 1+3+(1*3) = 7 Link to comment Share on other sites More sharing options...
pap Posted 6 March, 2015 Share Posted 6 March, 2015 IS IT NOT EQUALLY TRUE THAT 3+4+(3*4) = 19 5+6+(5*6) = 41 1+3+(1*3) = 7 Yes. Good work, Bear. Link to comment Share on other sites More sharing options...
farawaysaint Posted 6 March, 2015 Share Posted 6 March, 2015 IS IT NOT EQUALLY TRUE THAT 3+4+(3*4) = 19 5+6+(5*6) = 41 1+3+(1*3) = 7 In other news, this is a stupid question with multiple answers Link to comment Share on other sites More sharing options...
Whitey Grandad Posted 6 March, 2015 Share Posted 6 March, 2015 In other news, this is a stupid question with multiple answers ...is the correct answer, Link to comment Share on other sites More sharing options...
Weston Super Saint Posted 6 March, 2015 Share Posted 6 March, 2015 In other news, this is a stupid question with multiple answers Which, frankly, describes LinkedIn. Gets more and more like retard facebook everyday. The first time I see a cat video / lolcatz on LinkedIn it will be gone.... Link to comment Share on other sites More sharing options...
Window Cleaner Posted 7 March, 2015 Share Posted 7 March, 2015 (edited) 10. But it wasn't easy! Yes it was........kindergarden stuff Think it appears in a selection test for the selection test for the selection test for some big firm or other, but then these lines are preceeded by 1+2=5 which takes away the multiple answers I think. Edited 7 March, 2015 by Window Cleaner Link to comment Share on other sites More sharing options...
Whitey Grandad Posted 7 March, 2015 Share Posted 7 March, 2015 Yes it was........kindergarden stuff Think it appears in a selection test for the selection test for the selection test for some big firm or other, but then these lines are preceeded by 1+2=5 which takes away the multiple answers I think. So somebody has invented a whole new mathematical or logical notation which just happens to look like the traditional one that has been in use for generations. If they are not going to tell us the syntax then any answer is a valid one since we can all make up our own alternatives. These sort of questions should be treated with the disdain that they deserve. Link to comment Share on other sites More sharing options...
Verbal Posted 7 March, 2015 Share Posted 7 March, 2015 So somebody has invented a whole new mathematical or logical notation which just happens to look like the traditional one that has been in use for generations. If they are not going to tell us the syntax then any answer is a valid one since we can all make up our own alternatives. These sort of questions should be treated with the disdain that they deserve. Maths is often like that. One of the legacies of Turing (and others) is to think of maths as pattern, and sometimes bits of the pattern are missing. Link to comment Share on other sites More sharing options...
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