Now, Walter, you have to consider our budget for prizes is $0, so considering that, I think our generosity is beyond question. Your guess is still as valid as anyone else's, but it's wrong. Close, though!
I am getting a mental picture of your number. Now given this I am going to reduce your number to zero. Please do the following exercise and let me know if my ‘powers of perception’ are accurate.
(1) take your number ‘X’
(2) double it
(3) add 102
(4) divide it by 2
(5) subtract your original number
(which only you and I know) from the result
(6) deduct 51 from this result
(7) voila . . . I have reduced your number to zero! Correct?
Now this surely deserves another prize for innovation. And yes, I know the budget is zero but be creative. Think music!