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What Four Numbers?

Math brain teasers require computations to solve.


Puzzle ID:#49214
Fun:*** (2.29)
Difficulty:** (1.38)
Submitted By:CrazyPineapple*




Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

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Jan 21, 2012

By this sentence: "If you subtract the middle two numbers, it equals two." Are you trying to say "the difference between the two middle numbers is two" ? I'm pretty sure that's what you meant, but that's not what your sentence actually means.
Jan 31, 2012

A fun riddle, but two minor nitpicks:
I wouldn't call them "digits" in the answer.
One could argue for a solution of 4,7,9,11 unless the conditions say "exactly one odd number".
Feb 03, 2012

I got 4, 7, 9, and 11 for the same reason.
Feb 08, 2012

The digits are 12, 5, 6, and 8.
Sep 20, 2012

your answer is not true because you say that the difference of two middle number is equal to two but for your answer the difference is equal to one.
Oct 07, 2012

If you write the answer (the same 4 numbers given by the author) in the order 12, 8, 6 and 5, then the doubts would be cleared. I got these 4 nos. in this order in my solution.
(Yes, it would have helped if the problem had mentioned 'the other two numbers' (meaning thereby other than the highest and lowest numbers) instead of 'the middle two numbers'.)

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