Try another version of this question Get help: Box 1: Enter your answer as a fraction (like 3/5 or 10/4) or as an integer (like 4 or -2)
On a 7 question multiple-choice test, where each question has 2 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity `1-(1/2)^7= 127/128`