Respuesta :

fichoh

Answer:

6 ways

Step-by-step explanation:

Given that:

Number of options, n = 4

Combo, r = 2

Using Combination :

nCr = n! ÷ (n-r)! r!

4C2 = 4! ÷ (4-2)!2!

4C2 = 4! ÷ 2!2!

4C2 = (4 * 3) / (2 * 1)

4C2 = 12 / 2

4C2 = 6