Can a polyhedron have 10 faces, 20 edges and 15 vertices?

If F = 10, V = 15 and E = 20.
Then, we know Using Euler’s formula, F + V – E = 2
L.H.S. = F + V – E
= 10 + 15 – 20
= 25 – 20
= 5
R.H.S. = 2
L.H.S. ≠ R.H.S.
Therefore, it does not follow Euler’s formula.

Class 8 Maths Chapter 10 Exercise 10.3 Solution in Video

for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-10/