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**[SOLVED] Propositional logic Discrete Mathematics**

**1. Homework Statement**

Assuming atleast one of the following statements is true, which one is it? why?

a. Exactly one of these statements is true

b. Exactly two of these statements are true

c. Exactly three of these statements are true

d. Exactly four of these statements are true

e. Exactly five of these statements are true

**2. Homework Equations**

These are propositions, which can either be true or false, but not both. Total number of statements = 5 hence n = 5. Atleast one is true so n-1

**3. The Attempt at a Solution**

Inputting the above equation n-1=4, so exactly four of these statements is true. d points to this statement, which is true.