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Find the probability

Algebra
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1. A number is even or red

2. A number is prime or blue

3. The number is less than 6 or white

4. The number has a factor of 2 or not red

5. The number is a multiple of 3 or blue

6. The number is a 4 or white

Mar 9th, 2015

1. A number is even or red

  P(even) +P(red) –P(even,red) = 4/8+3/8 -1/8= 6/8=3/4

2. A number is prime or blue

  =  P(prime) +P(Blue)-P(prime,blue) =4/8+2/8-1/8 =5/8

3. The number is less than 6 or white

  = P(<6) +P(white) – P(<6, white) =5/8+3/8-2/8 =6/8=3/4

4. The number has a factor of 2 or not red

=  P( factor 2 or not red) = p(factor 2) +P(not red)- P(factor2, not red) =4/8+5/8-3/8=6/8=3/4

5. The number is a multiple of 3 or blue

 

= P(multiple of 3) +P(blue) –P(multiple of 3, blue) 

  = 2/8+2/8-2/8 =2/8=1/4


Thanks


Mar 9th, 2015

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