#Venn diagrams and logical operators

Font "Arial",30,100

Font "Arial",30,100

For s = 1 to 5

clg

Text 20,20 ,"A"

Text 260,20 ,"B"

gosub circles

For n = 1 to 2000

x=rand*300

y=rand*300

A=0

B=0

gosub checkA

gosub checkB

if s = 1 then gosub one

if s = 2 then gosub two

if s = 3 then gosub three

if s = 4 then gosub four

if s = 5 then gosub five

next n

next s

end

one:

Text 140,250 ,"A"

if A=1 then circle x,y,2

return

two:

Text 100,250 ," A"+chr(1352)+"B"

if A=1 and B=1 then circle x,y,2

return

three:

Text 100,250 ," A"+chr(1357)+"B"

if A=1 or B=1 then circle x,y,2

return

four:

Text 120,250 ,"A'"

if not A=1 then circle x,y,2

return

five:

Text 100,250 ,"(A"+chr(1357)+"B)'"

if not (A=1 or B=1) then circle x,y,2

return

checkA:

if (x-100)^2+(y-150)^2<10000 then A=1

Return

checkB:

if (x-200)^2+(y-150)^2<10000 then B=1

Return

circles:

For x = 1 to 300

y=(-(x-200)^2+10000)^.5+150

circle x,y,2

circle x,-y+300,2

circle x-100,y,2

circle
x-100,-y+300,2

next x

return