Last night Alexis counted the number of instant messages she

Last night, Alexis counted the number of instant messages she received. She received four from Luis, three from Alexis, eleven from Samuel, five from Christopher, and thirty from her best friend (and very chatty) Savannah. She turned on her computer. What is the probability that the first instant message she receives is from Savannah?

Please explain also how you got the answer thank you!

Solution

Sol)

She received four from Luis,

three from Alexis,

eleven from Samuel,

five from Christopher,

and thirty from her best friend (and very chatty) Savannah

Total messages=53

Probability that she recieve from is = 30 / 53 = 0.5660