Notice this pattern when working with powers of 2: 2^0 2^1 2^2 2^3 2^4 ? 2 4 8 16
Every time we increase the power we multiply by 2. Or reading the pattern backwards, every time we decrease the power we divide by 2. What is 2 divided by 2? It is 1! So 2^0 = 1 to finish the pattern: 2^0 2^1 2^2 2^3 2^4 1 2 4 8 16
Try it with 3 or with 5 or with any number! You'll see that the pattern holds!