1 2 3 4

1 12 13 14

2 2 1 23 24

3 3 1 32 34

4 4 1 42 43

* * * There are 12 possible results, including 6 odd numbers, and the probability is

6 / 12 = 1/2

So the answer is 1/2.

/math/ques/detail/3d d0d 00 b-6880-4 13f-9 CCC-20 ea 5 fa 0 Fe 6a