The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: in township k , 1 / 5 of the housing units are equipped with cable television . if 1 / 10 of the housing units , including 1 / 3 of those that are equipped with cable television , are equipped with videocassette recorders , what fraction of the housing units have neither cable television nor videocassette recorders ?
[EX A]: 23 / 30

[EX Q]: Problem: at what rate percent on simple interest will rs . 750 amount to rs . 900 in 8 years ?
[EX A]: 2.5 %

[EX Q]: Problem: the sum of the first n positive perfect squares , where n is a positive integer , is given by the formula n ^ 3 / 3 + c * n ^ 2 + n / 6 , where c is a constant . what is the sum of the first 17 positive perfect squares ?
[EX A]:
1,78