Question

The box contains card numberal from 1 to 20 A card is drawn at random from the box find the probability what tha number on the drawn card is
a. A prime number
b. A composite number
c. A number divisible by 3
​

Answer 1

A. 2/5

B. 11/20

C. 3/10

Thank u......

Answer 2

$\huge\underline\mathfrak{Question ; }$ A box contains cards numerical from 1 to 20 a card is drawn at the random from the box find the probability that the number one on the drawn card is

i) a prime number

ii) a composite number

iii) a number divisible by 3

$\huge\underline\mathfrak\blue{Answer ; }$
$<I>$

(i) Prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17, 19 i.e. 8

P(prime number) = 8/20 or 2/5

(ii) Composite number from 1 to 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20 i.e. 11

P(Composite number) = 11/20

(iii) Number divisible by 3 from 1 to 20 are 3, 6, 9, 12, 15, 18 i.e 6

P(number divisible by 3) = 6/20 or 3/10 .