Suppose in box ther are 20 red,30black,40blue amd 50white ball.what is the minimum number of balls to be drawn without replacemen,so that your certain about getting 4 red,5 black,6 blue and 7 white balls?
Answers
Answer:
R = 28 = 28% chance
G = 20 = 20% chance
Y = 19 = 19% chance
B = 13 = 13% chance
W = 11 = 11% chance
B2 = 9 = 9% chance
Total number of balls is = 100
Requirement Draw at least 15 balls of a single color
Probability question
Though question is what is the minimum number of balls that must be drawn without replacement to guarantee at least 15 balls of a single colour.
Ok so any Ball that there is less than 15 of needs to be put in another category
so we get a new table
R = 28 = 28% chance
G = 20 = 20% chance
Y = 19 = 19% chance
BWB2 = 33 = 33% chance
So there is a 33% of drawing a ball that gets us no closer to … (more)
Step-by-step explanation:
Answer:
124
Step-by-step explanation:
suppose he is unluckiest person he will get all these at end
that means all the first 50 white comes, then all 40 he get blue ,total 90 balls that is even after taking all the 90 balls he did not get all the colours
then he took 30 balls all the balls came out black,
total became 90+30=120
after getting 120 balls he only left with red balls
now he only needs 4 red balls so all the conditions satisfied now
120+4=124 balls