The first 4 values of geometric progression are 2,4,8,16 (starting with 2, 2x2=4, 4x2=8, 8x2=16).
Priyanka Godbole

Thanks for the explanation Priyanka. This helps me a lot!
Now I understand the different between multiple of 8 or 4(only) and the geometric progression. I’ll use it as a reference

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