Question

if A subset of B, B subset of C, then A subset of C this property is called
A) Reflexive
B) Semitric
C) Transitive
D) Equivalent​

Answer 1

Let A is a subset of B and B is a subset of C.

Then there is an x in B such that, for every x in B,x is in C and there exists an x in A such that, for every x in A,x is in B. Thus, for every x in A,x is also in C, and thus A is a subset of C.

Hence proved. hence proved