TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a train running at the speed of 72 km / hr crosses a pole in 9 seconds . find the length of the train .

SOLUTION: 180 meter

PROBLEM: Problem: how many diagonals does a polygon with 13 sides have , if one of its vertices does not connect to any diagonal ?

SOLUTION: 54

PROBLEM: Problem: rahul played weel in this season . his current batting averagge is 46 . if he score 78 runs in today match . his batting average will become 54 . how many matches had he played in this season .

SOLUTION:
3