1.

Write the component statements of the following compound statements andcheck whether the compound statement is true or false.(i) 57 is divisible by 2 or 3.(ii) 24 is a multiple of 4 and 6.(iii) All living things have two eyes and two legs.(iv) 2 is an even number and a prime number.

Answer»

(i) Here component statements are:

p: 57 is divisible by 2. [false]

q: 57 is divisible by 3. [true]

Given compound statement is of the form ‘pvq’.

Since, the statement ‘pvq’ has the truth value T whenever either p or q or both have the truth value T.

So, it is true statement as 57 is divisible by 3.

(ii) Here component statements are: p: 24 is multiple of 4. q: 24 is multiple of 6.

Given compound statement is of the form ‘p ^ q’

Since, the statement ‘p A q’ has the truth value T whenever bothp and q have the truth value T.

So, it is a true statement as 24 is divisible by 4 and 6.

(iii) Here component statements are:

p: All living things have two eyes. [false]

q: All living things have two legs. [false]

Given compound statement is of the form ‘p ^q’

It is a false statement. Since ‘p ^ q’ has truth value F whenever either p or q or both have the truth value F

(iv) Here component statements are:

p: 2 is an even number. [true]

q: 2 is a prime number. [true]

Given compound statement is of the form ‘p ^ q’.

It is a true statement. Since ‘p ^ q’ has truth value T whenever both p and q or both have the truth value T.



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