Formula 1/2 (A+B)C that is the formula
Answer: a)
b) 
Step-by-step explanation:
Since we have given that
Number of days in a year = 365
Number of students = 50
Probability that no two students share the same birthday. It means each student has different birthday.
Probability(no two students share the same birthday)
Probability(no two students share the same birthday)
Probability(no two students share the same birthday)
Probability that at least one of the students has the same birthday as another student in the class is given by

I would say the parakeets make up 14% of the shelter.
.60 because there's 5 spots and 3 are odd so 3/5 is also equivalent to 60 percent? sorry if wrong!
Changing those words into an equation, we get:
7+3x = 19
Subtract both sides by 7
3x = 12
Divide both sides by 3
x = 4
That number is 4. Have a nice day! :)