1.Two dice are rolled.Find the probability that the sun of the number is equal
to or larger than 7?
2.There are mistakes in the following calculations.Correct the mistakes.
A bag contains two $5 coins,there $2 coins and four $1 coins.A coin is
drawn from the bag at random,what is the expected value of the coin?
Expected value= $5 + $2 + $1 /3
- Gabriella MontezLv 71 十年前最愛解答
As follows:資料來源： My Maths Knowledge