Let a and B Be Sets with Cardinal Numbers, N(A)= $\text { If } B \subseteq A , n ( B ) = n ( A ) - n ( A - B )$

question 279

True/False

Let A and B be sets with cardinal numbers, n(A)= a and n(B)= b, respectively. Decide whether the statement is true or false.
- $\text { If } B \subseteq A , n ( B ) = n ( A ) - n ( A - B )$

---

Definitions:

Reticular Fibers

Fine, thread-like fibers made of collagen and glycoproteins that form the supportive meshwork in various tissues such as the lymph nodes and spleen.

Actin Myofilaments

Thin protein filaments in muscle cells that, along with myosin, are responsible for muscle contraction.

Tropomyosin

Fibrous protein found as a component of the actin myofilament.

Fibrous Actin

Filamentous actin, part of the cytoskeleton in cells, involved in various types of cell movement and the maintenance of cell shape.