Question

A bag contains '3' red balls and 4 black balls. A ball is selected at
random from the bag, what is the probability that the ball selected
1) Black 2) Red
be​

Answer 1

Answer:

1 P(black ball) = 4/7

2 P(Red ball)= 3/7

Step-by-step explanation:

Probability=No.of favourable outcomes/ Total no. of outcomes

Answer 2

Answer:

total no of balls = no. of red balls + no. of black balls

=3+4

=7 balls

1 ) probability of getting black balls

probability =(m/n)

where m = no of black balls

= 4 black balls

n = total no.of balls

=7 balls

= ( 4/7 )

2 ) probability of getting red balls

probability =(m/n)

where m = no of black balls

= 3black balls

n = total no.of balls

= 7 balls

= ( 3/7 )

Step-by-step explanation:

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