The task is to generate the correct answer for a given math problem.
--------
Question: Problem: | x + 3 | | 4 - x | = | 9 + x | how many solutions will this equation have ?

Answer: 1

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: the length of a rectangle is halved , while its breadth is tripled . watis the % change in area ?

Answer:
50 %