What are bulk material properties?

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Consider the following statements for Nanotechnology:
1. It is the technology of creating materials and devices atom-by-atom.
2. Physical properties change at the nanometer scale.
3. Chemical properties change at the nanometer scale.
Which of the above statements are correct?