create expression for 25, using 2, 4, 6, 8, +, -, /, *, ()

[toblave]

i was challened to figure out the following ... and it's driving me nuts. please can someone help!

using the numbers 2, 4, 6 and 8 only ONCE each, and using + - / * and (), make an equation that equals 25.

the best i could do uses the 2 twice so it's no good -- (6^2+8^2)/4=25

thanks!

 

[stapel]

the best i could do uses the 2 twice so it's no good -- (6^2+8^2)/4=25

Does this mean that you're actually allowed to use exponentiation, in addition to the listed operations?

Thank you!

Eliz.

 

[toblave]

i'm fairly certain there is no way to do it otherwise so i'm going to say that yes, exponation is allowed. thanks!

 

[toblave]

i guess i meant 'exponentiation'!

 

[tkhunny]

Four more, without exponentiation.

4x(6+(2/8))

4x((2/8)+6)

(6+(2/8))x4

((2/8)+6)x4

Really only one more, but you can see that.