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LuckyWell [14K]
3 years ago
8

5. Grayson a green number cube and a white number cube. the faces of the cubes are number 1 through 6. Graysen roll each cube on

e time. What is the probability that the green cube will land with an even number face up and the white cube will land with a number greater than 2 face up?
A.1/9
B.1/36
C.1/3
D.1/6
Mathematics
1 answer:
Valentin [98]3 years ago
7 0

Answer: P(G even and W>2) = 1/3 or 0.333 or 33.3%


Step-by-step explanation:

Independent events multiply probabilities,

P(G even)=1/2, P(W>2)=2/3, P(G even and W>2)= 1/2 × 2/3 = 1/3.


Without using definition of "independent events", or rules referring to them, I use sample space S of 36 points, and P(event) = #(event)/#(sample space).

Points are labeled with two digits, left is green die, right is white die. S = {11,12,13,14,15,16,21,...26,...,61,...,66}, and #(S)=36.

An event E is a subset of S, and

0 <= #(E) <= #(S) = 36.

Event G even is GE={21,22,23...,41,42,...,61,...,66},

#(G even)=18

Event "W>2" = W2 ={13,14,15,16,23,24...,63,64,65,66},

#(W>2)=24.

Event G even and W>2 GEW2={23,24,25,26,43,44,45,46,63,64,65,66),

#(GEW2)=12

P(GEW2)=#(GEW2)/#(S)=12/36=1/3=33.3%



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