ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos

TSI Math: How Many Times Will Jaqen Roll Two 10s? 38 Views


Share It!


Description:

Jaqen has two 10-sided dice. He rolls both at the same time. What is the probability that both faces add up to a number less than 20?


Transcript

00:01

Okay sy mash members Jaqen has to ten sided tice

00:06

He rolls both at the same time what's the probability

00:09

that both faces add up to a number less than

00:12

twenty There's only one way to roll us some greater

00:20

than or equal to twenty rolling two tens Any other

00:24

combination of faces adds up to a number less than

00:27

twenty much faster to find the probability of rolling two

00:29

tens and find the probability of all the other possible

00:32

roles so just take the shortcut there Well the probability

00:34

of rolling ten on one dies one in ten because

00:37

each of the ten faces has an equal probability of

00:40

turning up The probability of rolling to tens then is

00:43

one over ten times one over ten or one over

00:47

one hundred or one percent The probability of rolling anything

00:50

other than two tens and a rowing to faces that

00:53

add up to a number less than twenty is one

00:55

minus the probability of that one hundred shot So it's

00:59

ninety nine out of one hundred probability that both faces

01:02

add up to a number less than twenty is ninety

01:05

nine out of one hundred And yeah we like those

01:07

odds So the answer is c and we're so shmoop

Up Next

TSI Math: Reading a Graph to Calculate Moolah Saved
42 Views

Per month, how much more money does Rose save than Olive?

Related Videos

TSI Math: Understanding Mean, Median, Mode, and Range
93 Views

All of the following statistical measures of the data above have the same value EXCEPT for

TSI Math: Reading a Circle Graph to Identify Pizza Percentages
55 Views

500 customers had pizza. What is the minimum number of slices that Lettuce Stuff You could have served yesterday?

TSI Math: What's the Median Number of Pizza Slices?
19 Views

What is the median number of slices eaten per customer?

TSI Math: Adding Percentages
25 Views

The following table shows the coffee preferences of everyone in Isabelle's office. What percentage of Isabelle's coworkers put cream in their coffee?