Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
Post a reply
Topic review (newest first)
- bob bundy
- 2012-12-20 05:16:03
hi
I have made the complete tree but left out some probabilities so you can practice completing the answers.
Bob
- jacks
- 2012-12-20 04:21:46
There are 4 machine and it is known that exactly 2 of them are faulty.they are tested one by one in a random order
till both the faulty machine are identified.. Then the probability that only 2 tested are needed, is
plz explain using tree Diagram.
Thanks