Brain Teasers
7 7 7 7 7 7 7 7=14
Fill in the blanks using addition, subtraction, multiplication and division signs, using each sign at least once, to make the equation true:
7 7 7 7 7 7 7 7=14
7 7 7 7 7 7 7 7=14
Answer
7+7+7/7*7-7-7+7=14Hide Answer Show Answer
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Comments
You could also do 7-7+7-7+7-7+7+7=14
you could do:
7+7-7+7-7+7-7+7=14
7+7-7+7-7+7-7+7=14
Feb 12, 2002
or 7/7*7+7-7/7*7+7=14
there are alot of ways to answer that
7 * (7 / 7) + 7 - 7 + 7 - 7 + 7 = 14
There are way too many answers for this for it to make a decent teaser. I would guess that there are over a hundred different solutions.
(7 * 7 * 7 - 7 * 7) / (7 + 7) - 7
(7 * 7 * 7 - 7 * 7) / (7 + 7 + 7)
(7 - (7 + 7) / 7) * 7 - 7 - 7 - 7
7 / 7 / 7 * (7 + 7 + 7) * 7 - 7
. . .
(7 * 7 * 7 - 7 * 7) / (7 + 7) - 7
(7 * 7 * 7 - 7 * 7) / (7 + 7 + 7)
(7 - (7 + 7) / 7) * 7 - 7 - 7 - 7
7 / 7 / 7 * (7 + 7 + 7) * 7 - 7
. . .
should say that order of operations count, if not all that matters is that
7-7 to get 0, then use divide and multiply till the last: +7+7=14
going left to right...
either way there are WAY to many answers for this one... needs more restraints
7-7 to get 0, then use divide and multiply till the last: +7+7=14
going left to right...
either way there are WAY to many answers for this one... needs more restraints
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