You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Emily was playing a video game and had 42 lives . In a hard part of the game she lost 25 lives . If she got 24 more lives in the next level , how many lives would she have ?
[EX A]: 41

[EX Q]: A company invited 18 people to a luncheon , but 12 of them did n't show up . If the tables they had held 3 people each , how many tables do they need ?
[EX A]: 2

[EX Q]: Grace has 16 jellybeans in her pocket . She has 8 red ones , 4 green ones , and 4 blue ones . What is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color ?
[EX A]:
13