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# What is Correct

## 80 posts in this topic

Is it correct that seven and five is thirteen or seven and five are thirteen?

The 'or' implies that at least one is correct. As only once change has occurred we must assume that the correctness refers to the change.

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In the question, it obviously amplifies the fact that the answer is concerning whether or not it is grammaticaly correct to say 'is' thirteen, or 'are' thirteen. So the answer is 'is', and the technicality of the real answer is unimportant.

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In the question, it obviously amplifies the fact that the answer is concerning whether or not it is grammaticaly correct to say 'is' thirteen, or 'are' thirteen. So the answer is 'is', and the technicality of the real answer is unimportant.

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Hi spazchik,

There are 7 children standing in a row, each with a number/label (1 thru 7). Child 5 is thiteen years old, child 7 is also thirteen.

So, 5 and 7 'are' thirteen.

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I thought of it because of the joke "6 * 9 = 42", this joke is from The Hitchhiker's Guide to the Galaxy. It's performed in base-13.

DARN, that thing has always puzzled me, and you tell me the obvious in so little words. I was always guessing someone made a translation error (I read it in Dutch), so I never thought of base-conversion.

Thanx for beating some sense into me.

BoilingOil

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well . . . I don't know about you but I'm pretty sure 7+5 does NOT equal 13.

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Five and seven is 12.

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Well, if we're getting down to the nitty gritty semantics of the question, everyone is wrong....7 AND 5 is 75 (or 57 to dyslexics). The word AND does not unequivocably mean a math expression

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There is another one that i think works better when speaking.

"Which is correct? The yolk of the egg are white or the yolk of the egg is white."

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5+7=12....

So it wouldn't matter if you said "is" or "are" because neither are correct. Since Five and Seven don't add up to thirteen. [Just so you know]

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Well if someone uses the 5 and 7 are 13 one could say 5 6/5 pies and 7 whole pies are 13 whole objects due to it never said anything about 5 and 7 what.

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People, grammatically it is wrong, but mathematically it is right.

If it was just a statement someone would make it should have been seven and five are thirteen, this would be the correct thing to do. But if one would say it as a mathematical expression it ought to be seven and five is thirteen (pronouncing 7+5=13), saying this doesn't make you wrong. Even this is right as I explained before, 7+5=13 (seven plus five equal thirteen, that statement has my preference when it comes to maths).

7+5=13 in base-9 as:

7*9^0 + 5*9^0 = 1*9^1 + 3*9^0

7*1 + 5*1 = 1*9 + 3*1 = 9 + 3 = 12

VoilÃ¡!

Therefor both statements are most certainly correct!

EDIT: @BoilingOil, you should wiki it sometime ... en de volgende keer het boek in het Engels lezen

6 * 9 = 42 (base-13)

6*13^0 * 9*13^0 = 4*13^1 + 2*13^0

6*1 * 9*1 = 4*13 + 2*1

6 * 9 = 52 + 2

6 * 9 = 54 (base-10 converted)

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the answer is neither because seven plus five is twelve. and correct english is "seven and five is twelve." well, even if it isn't "correct," that is the colloquial way of saying it. why? because we say seven plus five IS twelve, so why would you say seven and five are twelve? it just sounds weird.

it doesnt sound weird to say are.... there are two numbers so why wouldnt it be are?

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Actually it's WHICH is correct?

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Neither, 5 and 7 are TWELVE... learn to count.

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If the question were posed using the digits 13 then you might be able to use the base-9 'logic'....

However, the question was posed with the text 'thirteen'. The word thirteen is 13(base-10), period. if the text were 'one three, base nine'....then, ok.

Edited by gwg

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What is Correct - Back to the Logic Puzzles

Is it correct that seven and five is thirteen or seven and five are thirteen?

What is Correct - solution

Of course, adding seven to five makes twelve and not thirteen.

u got me i had think for second

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I suppose it's also too late to point out that the digits '13' in base-9 are equal to twelve in base-10. The number system that Mythx is looking for is base-11. However, like you said, the nomenclature 'thirteen' is only meaningful in base-10, since it is a linguistic blend of three and ten (a number that by definition cannot exist in base-9).

I do have to admit that it was a clever direction to go, though... It reminds me of the old computer joke:

There are only 10 types of people in this world, those who understand binary and those who don't...

If the question were posed using the digits 13 then you might be able to use the base-9 'logic'....

However, the question was posed with the text 'thirteen'. The word thirteen is 13(base-10), period. if the text were 'one three, base nine'....then, ok.

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7+5=12 not 13. Also, as an answer to the is or are part of the question, it's are. This is of course if grammar still means s***.

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both are wrong 7+5=12

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Lol i neerly fell for it im soo stupid

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Neither, 5 and 7 are TWELVE... learn to count.

the way the question is worded it makes it a grammer question, in which case one of them is correct, if its a maths question then neither are correct.

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What is Correct - Back to the Logic Puzzles

Is it correct that seven and five is thirteen or seven and five are thirteen?

What is Correct - solution

Of course, adding seven to five makes twelve and not thirteen.

seven and five are numbers - you can add them of course!

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This is intended as a children's riddle/question.

Would there be confusion if the question said

"Is it correct that seven add five is thirteen OR that seven add five are thirteen?"

It doesn't matter at all about the grammatical sentence because even if the grammar is incorrect the entire sense of the statements is false.

Also the question does not imply that either statement is correct. "It is correct ..." at the start would imply this.

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First of all, 7+5=12, not 13.

In math, when spoken verbally, the correct grammar is "Seven and five is twelve because you are combining seven and five to make a single whole of twelve. Twelve is being used as a collective noun in this sense.

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