Question

The number of surfaces, edges and vertices of a tetrahedron
are respectively a, b and c. The value of (a-b+c)is
a) O b) 1 C) 2 d) 3
​

Answer 1

Answer:

let the a=1

b=1

c=1

(1+1+1)= 3

Answer 2

Step-by-step explanation:

let a=1,b=1,c=1.

then ,

(1-1+1) = 2.