F.3 Maths
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?
Solution:
Expected value= $5 + $2 + $1 /3
= $2.67
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