In a box, there are 100 balls numbered 1 to 100. 20 balls are randomly picked and the number written on them is noted down. The observations are
unimodal
bimodal
multimodal
none of these
Since no observation occurs more frequently than others, the observations have no mode.
A box contains 10 balls numbered from 0 to 9. The balls are identical, so when Karan starts picking a ball out of the bag, he is equally likely to pick anyone of them. Karan picked a ball and replaced it in the bag after noting its number. He repeated this process 2 more times. What is the probability that the ball picked first is numbered higher than the ball picked second and the ball picked second is numbered higher than the ball picked third?