Let’s analyze it:

1=1
2=2
3=6
4=24

Each equation seems to represent a factorial:

1! = 1
2! = 2
3! = 6
4! = 24

A factorial is the product of all positive integers less than or equal to a given positive integer.

So, following this pattern, for 6:

6! = 6 × 5 × 4 × 3 × 2 × 1 = 720

Therefore, 6=? in this pattern is 720.