Answer:
for the first one rule x6-3:
4=21, 8=45, 5=27, 9=51, 7=39, and 10=57
For the next one:
1=2, 2=4, 3=6, 6=12, 9=18, and 10=20
Explanation:
Okayy! Done! The first number is input, the second number is output. So first you have 2 times 4 divided by 2! 3 times 4 divided by 2. Just follow the rule.