To find a power of 2, multiply 2 by itself the number of times indicated by the exponent. So for example 2² would be 4, 2³ would be 8 and so on. the last power of 2 before surpassing 200 is 128 which is also a multiple of 16(P.S 2 raised to the power of 7 or 2⁷ = 128 and (16) (8)= 128, thank you I hope this makes sense)