Which number is the grays among the given choices
The number inches light travels in a year
The number of atoms in your body
The number of solutions to z is not equal to 77
The number of people in the world
It is unclear what "grays" refers to in this context. Can you please provide more information or clarify your question?
Which number is the greatest among the given choices
The number of inches light travels in a year
The number of atoms in your body
The number of solutions to z not equal to 77
The number of people in the world