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Of the first 2021 primes, how many are odd?

A.
2019
B.
2020
C.
2021
D.
None of these
Mathematics
Competition
Math League
Exam No：2022 First Round Grades 10-12 Year：2022 Question No：24

Answer:

B

Knowledge points:

G10-12 - Number Theory - Prime Factorization (Reasoning)

Solution:

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