Question

A bag contains 5 red ,8white,and 7 black balls A ball is drawn random from bag what is probability the drawn bell is 1.red or white 2.not black 3.neither white nor black

Answer 1

Total posible outcomes = 20

Poasible outcomes= 13

Probability of getting red or white ball = no. of posaible outcomes / total possible out comes

= 13/20

2. Totol possible outcome = 20

Possible outcome = 13

Probability of not getting black ball = 13/ 20

3. Total posible outcomes = 20

Possible outcome = 5

Probability of getting neither black nor white = 5/20 = 1/4

NOTE : THE FORMULA TO FIND PROBABILITY REMAIN SAME THAT IS = NO. OF POSSIBLE OUTCOMES / TOTAL NO. OF POSSIBLE OUTCOMES