1 immediately before 2
Shuffle the numbers through into a uniformly random order. What is the probability that appears immediately before (that is, sits in the very next position after )? (to 3 decimals)
Show hints (2)+
- Glue '12' into a single block and count arrangements.
- Favorable = 4! block orderings, over 5! total.
Answer
Reveal answer →Final answer
0.2
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Asked at: Timed Mental-Math & Sequences, Game-Based Aptitude