instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: of the seven - digit positive integers that have no digits equal to zero , how many have two digits that are equal to each other and the remaining digit different from the other two ?
answer:
152409600


question:
Problem: one half of a two digit number exceeds its one third by 7 . what is the sum of the digits of the number ?
answer:
e ) 1


question:
Problem: in a group of 100 cars , 47 cars do not have air conditioning . if at least 53 cars have racing stripes , what is the greatest number of cars that could have air conditioning but not racing stripes ?
answer:

47