Question

John rolls a number cube twice. What is the probability that the sum of the 2 rolls is less than 7, given that the first roll is a 1?

one over six

two over three

one over two

five over six

Answer 1

@Squirrels

Answer 2

Well the first roll is going to be 1. There second roll is going to have to be the number 1-5 because once you add the outcome of those numbers, its going to have to be less than 7.

Out of 6 possible results of the number cube youre going to want either five of them. So it will be ?/6

Answer 3

I pretty much gave you the answer. If you still don't get it, just say so.

Answer 4

yes I do thank you could you help me with another one please?

Answer 5

Please tell me your answer first, I want to make sure you understand (:

Answer 6

5/6

Answer 7

You got it ༼;´༎ຶ ۝ ༎ຶ ༽
Have a medal

Answer 8

The length of a screw produced by a machine is normally distributed with a mean of 0.25 inches and a standard deviation of 0.01 inches. What percent of screws are between 0.24 and 0.26 inches?

Answer 9

68%

95%

99.7%

100%
@Squirrels