Find the missing numbers in the following patterns.​

Q. Fill in the missing numbers in the following patterns of numbers.

Q. The given number tower follows a pattern.
Identify the pattern and find the missing number in the pattern.

Q. Find the missing numbers in the following fact family by establishing a multiplication pattern.

Q. The first figures, follow some pattern. Find the missing number in the second figure by following the same pattern.

Q. Find the missing number $x$ in the following pattern. 3, 9, ?, 81.