A="10..30"
B="100..200"
A1=10
A2=30
B1=100
B2=200
#for i in {10..30}; do
for i in $A1 to $A2; do 
    for j in {100..200}; do
#    for j in $B1 to $B2; do
        k=i+j
        echo $i " " $j " " $k
    done
done