Question

all the powers of 4 in the range 4 through 1000

Answer 1

we can check

4^1=4

4^2=16

4^3=64

4^4=128

4^5=1028

we can clearly see that

in the range of 4 and 1000 the number that exists are

(1,2,3,4)

4^1

4^2

4^3

4^4

exists in this range

this is an easy way to solve this problem