Answer:
15
Step-by-step explanation:
half of 30 is 15
he used all the numbers upto 30 once
all the numbers in between arent integers but decimals
Answer:
3, 27 and 9,9
Step-by-step explanation:
3*27 = 81
9*9=81
Technically you could say 1 and 81 but those two answers fit the most.