Using Euler’s formula find the unknown. Faces `?, 5, 20` , vectices `6, ?, 12` and Edges `12, 9, ?`

Using Eulers formula find the unknown.Faces ?,5,20, vectices 6,?,12 and Edges 12,9,?

Using Euler’s formula find the unknown: Faces, ?, 5, 20 Vertices, 6, ?, 12 Edges, 12, 9, ?

Using Euler's formula find the unknown. F = 5, V = ?, E= 9

Using Euler's formula find the unknown. F = 20, V =12 , E = ?

Using Euler's formula find the unknown. F = ? , V = 6 , E = 12

Using Euler's formula, find the values of x, y and z

Using Euler’s formula, find V if E = 10, F = 6.

Use Euler's formula to find the values of a, b and c.

Using Euler’s formula, find V, if E = 30, F = 12.

Using Euler's formula,find the number of faces if the number of vertices is 6 and the number of edges is 12.