A bag contains 4 white 5 orange and 3 purple marbles. If two marbles are chosen at random without replacing the first marble after it was drawn find the probability of selecting a purple on the first draw an an orange on the second draw

1st draw: 1/12                      2nd draw: 1/11

Step-by-step explanation:

During your 1st draw, there are 12 marbles so 1/12 is your answer.

During your 2nd draw, there are 11 marbles since you didn't put the purple one back. So, 1/11.

what is the original number? you forgot to add it.

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies