Context: According to a report published in 2014, about 43% of all Jews reside in Israel (6.1 million), and 40% in the United States (5.7 million), with most of the remainder living in Europe (1.4 million) and Canada (0.4 million). These numbers include all those who self-identified as Jews in a socio-demographic study or were identified as such by a respondent in the same household. The exact world Jewish population, however, is difficult to measure. In addition to issues with census methodology, disputes among proponents of halakhic, secular, political, and ancestral identification factors regarding who is a Jew may affect the figure considerably depending on the source.

Question: What percentage of Jews reside in Israel?
Answer: 43%

Question: What percentage of Jews reside in the U.S.?
Answer: 40%

Question: How many Jews live in Europe?
Answer: 1.4 million

Question: What is one reason the world population of Jews difficult to determine?
Answer: issues with census methodology

Question: How many non Jewish people live in Israel?
Answer: Unanswerable

Question: How many non Jewish people live in the United States?
Answer: Unanswerable

Question: Why is the world population of Jews easy to measure?
Answer: Unanswerable

Question: What percentage of non Jews live in the United States?
Answer: Unanswerable

Question: What is not a factor in who is a Jew?
Answer: Unanswerable