TWENTY-FOUR

Credit: Jon Erickson

__HACKING__

__The Art of Exploitation, 2nd Ed.__

Use each of the numbers 1, 3, 4, and 6 once and only once with any of the four math operations to total 24. You may define the order of operations. For example, 3 x (4+6) + 1 = 31 is valid, but incorrect, since it doesn't total 24.

[Note from JA: This problem is not nearly as simple as it might appear. You'll appreciate the solution more if you try it first - before looking at the hints or answer.]

HINTS:

1. There are no parentheses, exponents, or radicals in the answer.

2. The answer involves only two math operations.

3. The answer involves fractions.

4. The answer involves division of fractions.

**Answer:**

**[Note from JA: I was able to figure out that the answer had to involve division of fractions. I also figured out that 6 divided by 1/4 would equal 24. But what about that pesky 3? This is where I gave up. Here is the solution:]**

__6__**1 - 3/4**