Question

Q1. Propositions. Which of the following sentences are propositions?
a) It rained yesterday.
b) The last digit of the smallest prime number larger than 100100 is 1.
c) This sentence is false.
d) 6 + 5 = 10.

Answer 1

a), b) and d) are propositions;
c) is not proposition, since it is not possible to tell this sentence is true.