Add a letter to make this true.
Please retain the
=sign. (I consider solutions involving ≠, for example, to be trivial)
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1$\begingroup$ equal by definition, as in, you are declaring that 148 is seven by definition which is an inherently true statement. (or a statement with no truth value depending on the propositional calculus model you are using) $\endgroup$– John MeachamCommented Apr 17, 2016 at 20:56
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5 Answers
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1 B 4 8 = 7
Because :
one before eight is seven (8-1 = 7)
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4$\begingroup$ A rebus as a solution instead of the puzzle. I like it. $\endgroup$ Commented Apr 18, 2016 at 13:39
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$\begingroup$ Ah I was thinking 1 from 8 = 7. I was trying to decide whether that should count, since you're exchanging a letter instead of actually adding one. $\endgroup$– DevsmanCommented Apr 18, 2016 at 20:10
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148 = 7F
also
148 = 78
above is with digit, so replacing it with
148 = 7J
also
148 = 7D
because
In various radix systems:
${148}_{(10)}=7F_{(19)}$
${148}_{(10)}=78_{(20)}$
${148}_{(11)}=7J_{(22)}$
${148}_{(9)}=7D_{(16)}$
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$\begingroup$ The 2nd one doesn't work because 8 isn't a letter. Are radix systems just different bases? $\endgroup$ Commented Apr 18, 2016 at 9:48
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$\begingroup$ @QuestionAsker Yes. $\endgroup$– anonCommented Apr 18, 2016 at 11:00
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$\begingroup$ @QuestionAsker Yes, they are indicated in subscript in the explanation. There are other examples too. With letters only ;) $\endgroup$– kamenfCommented Apr 18, 2016 at 17:19
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Add
An italicized I over the top of the = turning it into ≠ or the not equals sign.
answered Apr 17, 2016 at 20:37
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1$\begingroup$ For any questions in this format, like match stick/add a line problems, I would consider these solutions to be trivial. Please retain the
=sign. $\endgroup$ Commented Apr 17, 2016 at 20:43 -
5$\begingroup$ A lot of times the trivial solution is the one that the asker is looking for though, they are banking on the people overlooking the obvious (and trivial to one person is clever to another). I am not sure there is a good way to tag things to indicate what type of problem it is without giving away the solution... I think the only way is to make the problem more precise. if messing with = is not on the table, add it to the question. $\endgroup$ Commented Apr 17, 2016 at 20:52
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$\begingroup$ Maybe a no overylays statement when the word "add" is used since i have seen it used both ways in puzzles.. (add in between and add on top) for future puzzles of this form... $\endgroup$ Commented Apr 17, 2016 at 21:00
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$\begingroup$ Actually, I think I can allow both, as there aren't any other solutions (at least I don't think), unless you try to cross the whole thing out or change the
=sign. $\endgroup$ Commented Apr 17, 2016 at 21:11
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Add "m" to for ("4," get it?). 1 from 8 = 7
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It's a very boring answer:
but 148a = 7 or any variation adding a letter variable, while being a trivial addition--it does invoke a rather great meaning that is fundamental to algebra.
I think you were looking for a read aloud style puzzle
one for eight is seven one "B" for eight is seven
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$\begingroup$ That's the first thing my friend said when I asked him, actually — "$148 = 7x$ where $x={148\over7}$" :) $\endgroup$ Commented Apr 19, 2016 at 19:00
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$\begingroup$ Although you may find your answer boring, you should use Spoilers. $\endgroup$– palschCommented Jun 11, 2016 at 13:35