So, the probability that Alex picked a black pen is 0.3 or 30%.
One day, while investigating, Detective Emily stumbled upon a suspicious-looking student, Alex, who was seen near the math department around the time the pens went missing. When questioned, Alex claimed to have only taken a pen randomly from the department. Secondary Math 2 Module 9 Probability 9.4 Answers
Probability (blue pen) = 8/20 = 2/5 = 0.4 So, the probability that Alex picked a black pen is 0
Detective Emily was on a mission to solve the mystery of the missing pens from the school's math department. The department had 20 pens in total, and it was known that 8 of them were blue, 6 were red, and 6 were black. Probability (blue pen) = 8/20 = 2/5 = 0
Detective Emily wasn't sure if she believed Alex, so she decided to calculate the probability of Alex picking a pen of a specific color.
Now, try working on some practice problems for Secondary Math 2 Module 9 Probability 9.4 to reinforce your understanding of probability concepts.
Probability (red pen) = 6/20 = 3/10 = 0.3