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Populaire Word Problems >

An ordinary die is tossed. What is the probability of getting a 3 or a 4?

Solution

A n or d ina ry d i e i s t osse d . Wha t i s t h e p ro babi l i t y o f g e tt in g a 3 or a 4 ?

Solution

\frac{1}{3}

+1

Décimale

0.33333 \dots

étapes des solutions

Find the probability of getting a 3:

\frac{1}{6}

Find the probability of a 4:

\frac{1}{6}

Since the events are disjoint, Use the formula

P (X_{1} \lor X_{2} \lor \dots \lor X_{k}) = P (X_{1}) + P (X_{2}) + \dots + P (X_{k})

= \frac{1}{6} + \frac{1}{6}

\frac{1}{6} + \frac{1}{6} = \frac{1}{3}

= \frac{1}{3}

Exemples populaires

3 decreased by a number Eliana opened a savings account and deposited 3,000.00 as principal. The account earns 10% interest, compounded monthly. What is the balance after 10 years?The radius of a circle is 39 kilometers. What is the circle's circonférence?one less that a positive number times three more than that number is 32. What is the number?what is the approximate area of a circle with diamètre of 8mm answer in terms of pi