instruction:
In this task, you need to provide the correct option for a given problem on probability from the provided options.
question:
Problem: what is the probability of randomly selecting one of the shortest diagonals from all the diagonals of a regular 11 - sided polygon ) ?
Options: a ) 1 / 2 , b ) 1 / 3 , c ) 1 / 4 , d ) 1 / 8 , e ) 1 / 11
answer:
c

question:
Problem: how many different ways can 2 students be seated in a row of 7 desks , so that there is always at least one empty desk between the students ?
Options: a ) 2 , b ) 3 , c ) 30 , d ) 6 , e ) 12
answer:
c

question:
Problem: how many cubes of 3 cm edge can be cut out of a cube of 18 cm edge
Options: a ) 36 , b ) 232 , c ) 216 , d ) 455 , e ) 363
answer:
c