In this task, you need to provide the correct option for a given problem on probability from the provided options.

Q: Problem: there is a 50 % chance jen will visit chile this year , while there is a 25 % chance that she will visit madagascar this year . what is the probability that jen will visit either chile or madagascar this year , but not both ? [ / b ] 
Options: a ) 25 % , b ) 50 % , c ) 62.5 % , d ) 63.5 % , e ) 75 %

A: b
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Q: Problem: how many cubes of 5 cm edge can be cut out of a cube of 15 cm edge 
Options: a ) 36 , b ) 232 , c ) 27 , d ) 48 , e ) none of these

A: c
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Q: Problem: in how many ways 3 boys and 3 girls can be seated in a row so that boys and girls are alternate ? 
Options: a ) 69 , b ) 70 , c ) 71 , d ) 72 , e ) 73

A:
d
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