2000004405 | math4u.vsb.cz

SubArea:

Level:

Project ID:

2000004405

Accepted:

0

Clonable:

0

Easy:

1

We randomly choose natural numbers from between

1

to

20

so that each choice is equally probable. Let the event

A

be: the chosen number is divisible by

5

. Let the event

B

be: the chosen number is smaller than

11

. Find

P (A ∣ B)

.

\frac{1}{5}

\frac{2}{11}

\frac{1}{4}

\frac{2}{5}