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

[EX Q]: Problem: a number is selected at random from the first 30 natural numbers . what is the probability that the number is a multiple of either 4 or 15 ? 
Options: a ) 17 / 30 , b ) 2 / 5 , c ) 3 / 10 , d ) 4 / 15 , e ) 11 / 30
[EX A]: c

[EX 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
[EX A]: c

[EX Q]: Problem: in a garden , there are yellow and green flowers which are straight and curved . if the probability of picking a green flower is 2 / 3 and picking a straight flower is 1 / 2 , then what is the probability of picking a flower which is yellow and straight 
Options: a ) 1 / 6 , b ) 1 / 8 , c ) 1 / 4 , d ) 3 / 4 , e ) 7 / 8
[EX A]:
a