en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

in a game, a player tosses a coin four times, what is the probability of getting two heads?

Solution

in a game, a player tosses a coin four times, what is the probability of getting two heads?

Solution

\frac{3}{8}

+1

Decimal

0.375

Solution steps

The possible outcomes when a coin is thrown four times are

2 \cdot 2 \cdot 2 \cdot 2

Therefore, the number of possible outcomes:

2^{4}

Find the number of favorable outcomes of getting 2 heads:

6

Probability

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

= \frac{6}{2 ^{4}}

\frac{6}{2 ^{4}} = \frac{3}{8}

= \frac{3}{8}

Popular Examples

Joan invests 200. She earns interest at 3% per annum, compounded monthly.What is the future value of Joan’s investment after 1.5 years?75% of what number is 60 circle has a circumference of 31pi centimeters. What is the diameter, in centimeters, of the circle?The radius of a circle is 5 cm. Find its area in terms of pipi.four more than a number is at least 11