Question

10 Ten cards numbered 1, 2, 3 ..., 10 are put in a
box. If a card is drawn at rondom, then
probabiltiy that the card drawn is a prime number is
(a) 7/10
(b) 3/5
(c) 2/5
(d) 1/2
​

Answer 1

Answer:

$\frac{2}{5}$

Step-by-step explanation:

there are 4 prime no.

2,3,5,7

and total no. are 10

so probability =

$\frac{4}{10}$

or

$\frac{2}{5}$

Answer 2

Given Numbers :

1, 2, 3, 4, 5, 6, 7, 8, 9, 10

To find

Probability of a prime number

SOMETHING YOU NEED TO KNOW

$\boxed{\sf Probability \ of \ an \ outcome = \dfrac{No: \ of \ given \ outcomes}{Total \ no: \ of \ outcomes}}$

Prime numbers that have only 1 and the number itself as a factor.

Prime numbers: 2, 3, 5, 7

Total no: of Prime numbers = 4

Total no: of outcomes = 10

Probability of getting a prime number

$\implies \dfrac{4}{10}$

$\implies \dfrac{2}{5}$

$\boxed{\boxed{\bold{Option \ C \ is \ your \ answer}}}}}}}$