Can you arrive at "1" using all ten digits?

One way is this
9 - 8 + 7 - 6 + 5 - 4 - 3 + 2 -1 + 0 = 1
:woohoo: :woohoo:
Finding other way also.

Kumaresh, you had used it very well.I think 123456789 raised to the power 0 also give the same result!

Yes Abid! You are right !! There can be number of ways to get the desired result!!
:) :) :)

Two great solutions from two mathematicians..Here is one from my side,

(123456789/246913578)*2

Thats wonderful Sageetharan... :)

This is very good solution.. :)

Even though it is a good solution,it does not satisfy the criteria "you should use all the ten digits once".May be i should have put only once.Anyway good thinking.

Kumaresh,
Your solution is very good and simple.
Abid,
Your solution is that of a mathematician who knows algebra.

Still there are some more ways to arrive at the answer which i will post tomorrow,if nobody posts it.

Oh then what about this mean?

(23456789)*0+1=1 :woohoo: :woohoo: :woohoo: :woohoo:

:woohoo: :woohoo: :woohoo: :woohoo: Good thinking sajeetharan.Keep it up.

Sajeeetharan,
It is really nice thinking.But how did you get the first answer?

Or else the reverse for what Abid said... :)
0 to the power(23456789)+ 1 = 1

:)

I think there are several ways to prove this puzzle. It is really not a tough one!