Hello, Allenge!

A test consists of 10 true/false questions.

To pass the test a student must get 60% or better on the test.

If a student randomly guesses, what is the probability that he/she will pass the test?

The student must get: .6 rightor7 rightor8 rightor9 rightor10 right.

We have: .

We work out the separate probabilities . . .

.

and add: .