An urn contains 10 pebbles numbered from 0 to 9. Three balls are drawn in succession from the urn with replacement. After each a draw a number is associated to the pebble and registered. If the numbers associated with the pebbles is for example 015 is drawn, we get 15.
(i) what is the probability of getting more than 9.
(ii) what is the probability of getting 100.
(iii) what is the probability of getting less than 100.