Question

A bag contains 3 red balls and 5 black balls what is the probability of drawing a))red ball b)) not red ball

Answer 1

total number of event = 5+3 = 8
no. of red ball = 3
no.of black ball = 5
probability of getting red.= 3 /8
probability of not getting red = 1 - 3/8
=5/8

Answer 2

the formula for
probability=no. of favorable outcomes / total outcomes
a)) probability of drawing red ball = bag contains 3 red ball / bag contains total 8 balls I.e 3 red 5 black
hence,
ans)))probability of drawing red ball = 3/8

b)) for not a red ball means its a black ball
hence, again
probability for not a red ball = black balls / total no. of balls
ans))))i.e. probability for not a re ball = 5/8




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