The numbers 1 through 10 are written in separate slips of paper, and the slips are placed into a box. Then, 4 of these slips are drawn at random.
What is the probability that the drawn slips are "1", "2", "3", and "4", in that order?
A)0.00476
B)0.000198
C)0.004752
D)0.11424

Question

Quizplus · Accepted Answer

The probability of drawing "1", then "2", then "3", then "4" in that order is calculated by multiplying the probabilities of each event happening in sequence. The probability of drawing "1" first is 1/10, then "2" is 1/9 (since one slip is already removed), then "3" is 1/8, and finally "4" is 1/7. Multiplying these probabilities gives (1/10) * (1/9) * (1/8) * (1/7) = 1/5040 = 0.000198.

The Numbers 1 Through 10 Are Written in Separate Slips