Question

Q1.





show that every positive integer is either even or odd​

Answer 1

Answer:

n(n+1)/2 = 1(1+1)÷2=1

Answer 2

Let x be any integer.

Show that every positive integer is of the for x or x+1.

This proves that if x=2 then x+1= 2+1=3

∴Every positive integer is either even or odd.