Answered

a red ball from a bag containining 9 balls of which are red​

Sagot :

Snowflakerviz

Answer:

Total balls=15

Black balls =6

Chance of black ball= 6/15

Chance of red ball 9/15.

Chance it will be either red or black: 6/15 + 9/15 = 15/15 or certainty.