Mathematics, 24.07.2020 09:01 adamkladke

There are 6 chemical elements represented by Li, Na, Mg, Rb, Cs, and Fr that are written on separate pieces paper. You randomly choose 3 elements, one
at a time, without replacement.

Find the probability that the third element is Na.

Enter the correct answer in the box.

Answers: 3

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There are 6 chemical elements represented by Li, Na, Mg, Rb, Cs, and Fr that are written on separat...