Answer:
[tex] \frac{4}{5} [/tex]
Step-by-step explanation:
Total number of marbles
= 3+2+8+4+3
= 20 marbles
P(not red)
=
[tex] \frac{3 + 2 + 8 + 3}{20} \\ = \frac{16}{20} \\ = \frac{4}{5} [/tex]
or P(not red)
=
[tex]1 - \frac{4}{20} \\ = 1 - \frac{1}{5} \\ = \frac{4}{5} [/tex]