In a lottery there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a blank? Choose the correct choice:
A) 2 / 3  B) 6 / 7  C) 5 / 7  D) 8 / 7  E) 4 / 3

Rationale: total draws = prizes + blanks = 10 + 25 = 35 probability of getting a blank = 25 / 35 = 5 / 7 correct option is c
Answer: C