10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then

Question

Scorpion4ik [409]

3 years ago

9

10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then

randomly selected. What is the probability of selecting two prime numbers?

Mathematics

2 answers:

ioda · Answer 1 · 2022-08-27T14:00:20+03:00

ioda3 years ago

7 0

The probability of selecting the first card which is a prime number is $\frac{5}{10} 
$
the probability of selecting the first card which is a prime number is $\frac{4}{9}$
<span>the probability of selecting two prime numbers is </span> $\frac{5}{10}$ × $\frac{4}{9}$ = $\frac{2}{9}$

AlexFokin [52] · Answer 2 · 2022-08-27T15:22:26+03:00

AlexFokin [52]3 years ago

6 0

You multiply 5/10 × 4/9 = 2/9

So the answer is 2/9