If 13,754 people voted for a politician in his first election, 15,420 voted for him in his second el

If 13,754 people voted for a politician in his first election, 15,420 voted for him in his second election, and 8,032 voted for him in the first and second elections, how many people voted for this politician in the first or second election?

Let P(A) be the first election votes, P(B) be the second election votes, and P(A ∩ B) be votes for both the first AND the second elections. We want P(A U B).

Use our two event calculator
P(A U B) = P(A) + P(B) - P(A ∩ B)
P(A U B) = 13,754 + 15,420 - 8032
P(A U B) = 29,174 - 8,032
P(A U B) = 21,142