Problem-19

Problem-19

Which of these are propositions? What is the truth value of those that are propositions?

a) Answer this question.

b) What time is it?

c) There are no black flies in Maine.

d) 8+x=8

e) The moon is made of green cheese.

f) 2^n≥60

 

Solution

 

a) Answer this question.

It is not  a proposition. It has no truth value.

b) What time is it?

It is not  a proposition. It has  no truth value.

c) There are no black flies in Maine.

It is  a proposition. It has  a truth value of false.

d) 8+x=8

It is not  a proposition. It has  no truth value.

e) The moon is made of green cheese.

This is a proposition that is false.

f) 2^n≥60

It is not  a proposition. It has  no truth value.

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