Question

2.Find the probability that 2 balls are drawn at random, are, (i) both white (ii)one black and one red (iii) none red, from a bag contains 7 white, 4 red and 5 black balls.

Answer 1

Answer:1)49/256

2)5/64

3)9/16

Step-by-step explanation:

1)7/16*7/16

2)4/16*5/16

3)12/16*12/16

hope it helps and it is exactly correct.u can trust me as i am a maths teacher in fitjee

Answer 2

Answer:

Step-by-step explanation:i)favourable outcomes =7

Total no of outcomes =16

Prob. =7/16

ii)favourable outcomes =9

Total outcomes =16

Pro.=9/16

iii)favourable outcomes =12

Total no of outcomes =16

Pro.=12/16

=3/4