Since there are three black shirts and 7 blue shirts, he has a 3/10 chance of picking a black.
a. Use the inclusion/exclusion principle.

b. By definition of conditional probability,

Answer:
the answers are <u>B and D </u>
Step-by-step explanation:
please let me know if I am wrong
I found about the answers by determine bias questions from non bias questions.
Answer:
190
Step-by-step explanation:
1/2(6+13)(5)
6+ 13 = 19*5 = 95
95/ 1/2= 190
Answer:
Option B.
Step-by-step explanation:
The given triangle is a right angle triangle.
In a right angle triangle,
In the given triangle,
Using Pythagoras theorem, we get
Taking square root on both sides, we get
Therefore, the correct option is B.