Question

A box contains 12 balls of which some are red in colour if 6 more red balls are put in box the probability of drawing red balls doublesthan a it in the bag find no of red balls

Answer 1

Answer:

Step-by-step explanation:the total number of possible outcome = 7

The total no of favourable outcome= 3

Let the A be the event of getting red ball

P ( A) = 3 / 7