How many integers between 25 and 250 (inclusive) are not perfect cubes nor perfect squares?

Guest Dec 21, 2021

#2**+2 **

Well.....first.... how many integers between 25 and 250 (inclusive) are there?

then count the # of perfect squares 25 36 49 etc and subtract it.....

subtract the # perfect cubes ( 27 64 etc ) and subtract it....

BUT BE careful to not count numbers twice ( numbers that are perfect squares AND perfect cubes)

Guest Dec 22, 2021

#3**+2 **

It seems you've worked out the steps to the answer; do you still need help?

tinfoilhat
Dec 22, 2021