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Even (related) chances (Posted on 2017-08-09) Difficulty: 3 of 5
Consider a string of n quaternary digits, randomly created.

Evaluate the probability that in this string the quantity
of an a priori defined digit, say zero, is even.

Double check your result by
either
a. direct count and comparison (e.g. n=4)
or
b. getting the same result by two distinct methods.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
the real surprisexdog2017-08-09 19:08:50
Some Thoughtsre: closed form.....so?Ady TZIDON2017-08-09 13:22:30
closed formxdog2017-08-09 12:17:40
Solutionsolution (spoiler)Charlie2017-08-09 11:34:37
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