If the chance that a vessel arrives safely at a port is $$\frac{{9}}{{10}}$$ then what is the chance that out of 5 vessels expected at least 4 will arrive safely?

$\frac{{15 \times {9^5}}}{{{{10}^4}}}$$

$\frac{{14 \times {9^4}}}{{{{10}^5}}}$$

$\frac{{14 \times {9^3}}}{{{{10}^4}}}$$

$\frac{{14 \times {9^6}}}{{{{10}^5}}}$$

If the chance that a vessel arrives safely at a port is $$\frac{{9}}{{

1.	If the chance that a vessel arrives safely at a port is $$\frac{{9}}{{10}}$$ then what is the chance that out of 5 vessels expected at least 4 will arrive safely?
A.	$\frac{{14 \times {9^4}}}{{{{10}^5}}}$$
B.	$\frac{{15 \times {9^5}}}{{{{10}^4}}}$$
C.	$\frac{{14 \times {9^3}}}{{{{10}^4}}}$$
D.	$\frac{{14 \times {9^6}}}{{{{10}^5}}}$$
Answer» B. $\frac{{15 \times {9^5}}}{{{{10}^4}}}$$

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If the chance that a vessel arrives safely at a port is $$\frac{{9}}{{10}}$$ then what is the chance that out of 5 vessels expected at least 4 will arrive safely?

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