What subset of real numbers does 26 belong to

Natural numbers are counting numbers like 1,2,3,4,5...
this set does not include negative numbers or 0

whole numbers are natual numbers but including 0

integers are whole numbers and also negative numbers

rational numbers are numbers that can be written in form a/b where b≠0

irrational numbers can't be written in form a/b, examples are like pi

real numbers are all of the abovee and more

26 belongs to the natural numbers set

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste