A jar contains 10 marbles marked with the numbers 1 through 10. You pick a marble at random. What is the probability of not picking the marble marked with the number 3? Enter you’re answer as a simplified fraction.

1/10

Step-by-step explanation:

There's 10 marbles that you can pick, and there's only one marble with a 3 on it. So it'd be 1/10

I did the question and the correct answer was 9/10. Not 1/10 like the other answer.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

depends on how many days you are talking about

step-by-step explanation: