vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến >

A die is tossed 3 times. What is the probability of no fives turning up? decimal answer

Lời Giải

A die is tossed 3 times. What is the probability of no fives turning up? decimal answer

Lời Giải

\frac{125}{216}

Các bước giải pháp

Probability of 5 when a die is rolled:

\frac{1}{6}

For multiple independent trials

P (x) = n C x \cdot p^{x} \cdot (1 - p)^{n - x}

number of trials

n = 3

number of successes

x = 0

probability of success in any one trial

p = \frac{1}{6}

P (0) = 3 C 0 \cdot (\frac{1}{6})^{0} (1 - \frac{1}{6})^{3 - 0}

3 C 0 = 1

= 1 \cdot (\frac{1}{6})^{0} (\frac{5}{6})^{3}

1 \cdot (\frac{1}{6})^{0} (\frac{5}{6})^{3} = \frac{125}{216}

= \frac{125}{216}

Ví dụ phổ biến

number divided by eight minus five is less than or equal to negative seven.My mother is 39 years older than I am. 15 years ago, she was 3 more than triple my age.Find the smaller of 2 consecutive integers, if the sum of the smaller and 6 times the larger is-29 . Write an equation to determine the consecutive integers. Variable: Equation:Find (a) the perimeter and (b) the diện tích of a rectangular room with the given dimensions.: 11.5ft long, 10.5ft wide Wyatt walked 8 miles in 2 hours. What was his walking rate in miles per hour?