Question

Briana guesses at all 10 true/false questions on her history test. Find each probability.

Answer 1

Briana guesses at all 10 true/false questions on her history test. Find each probability.

P(exactly 4 correct)

105/512 is the correct answer

Explanation:

Answer 2

This question is a little bit hard because you don't mention the probability, but , you could simply done it with this equation :

(number of ways to get the targeted correct answers) / (number of possible way to finish the test)

hope this helps