en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

If two dice are rolled, what is the probability of getting a sum of 7?

Solution

I f tw o d i ce a re ro ll e d, w ha t i s t h e p ro babi l i t y o f g e tt in g a s u m o f 7 ?

Solution

\frac{1}{6}

+1

Decimal

0.16666 \dots

Solution steps

The possible outcomes when two dice are rolled are

6 \cdot 6

Therefore, the number of possible outcomes:

6^{2}

Find the number of favorable outcomes of getting a sum of 7:

6

Probability

= \frac{number of favorable outcomes}{total number of outcomes}

= \frac{6}{6 ^{2}}

Cancel the common factor:

6

= \frac{1}{6}

Popular Examples

Garlin is 8 years older than Lu. In 7 years the sum of their ages will be 60. How old is Garlin now?:4:years old Translate the following to an algebraic expression: number increased by eleven is negative four.Twice the difference of a number and 4 is 12 more than 7 times the number.:Find the number.133 is 35% of what number?Zoe invested 780 in an account paying an interest rate of 5.7% compounded daily. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach 1,230?