Math help?

Asked by Anon22 (4

) April 23rd, 2020

An ordinary (fair) die is a cube with the numbers 1 through on the 6 sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.

Compute the probability of each of the following events.

Event A : The sum is greater than 8 .

Event B : The sum is an odd number.

Write your answers as exact fractions.

mathematics

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2 Answers

This is a very easy thing to determine without complicated math.

List all the combinations of two die, i.e., “1+1,1+2….6+6”

Remember, to include all the combinations, so “1+2” is different from “2+1”.

There are 36 combinations possible (6 from the first die times 6 from the second die = 36).

Then count how many add to more than 8, and how many are odd numbered totals.

(We give hints and direction here, we don’t do your homework for you. From the above you should be able to complete this in about 15 minutes tops.)

zenvelo (39546

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I have just one small thing to add to what @zenvelo said. Before solving for Event B, take a guess as to what you think the answer should be. When you work out the answer, see if it matches your guess.

LostInParadise (32183

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