perplexus.info :: Just Math : Two distinct questions

Two distinct questions (Posted on 2016-05-13)

Two distinct non-zero digits were chosen randomly.

a. Given their sum is even, what is the probability
that one of the digits was 4?
b. Given one of the digits was 4, what is the probability
that their sum is even?

No Solution Yet Submitted by Ady TZIDON

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	Subject	Author	Date
	solution	Charlie	2016-05-13 14:46:05

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