Question

a interger is picked at random from 1 to 100 no. what is the probility that it is a prime no.​

Answer 1

Step-by-step explanation:

Prime no. Between 1 to 100=> 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 =25

And, total no from 1 to 100 = 100

So,

Probability = 25/100

=1/4

Answer 2

Step-by-step explanation:

Total outcomes = 100

favourable outcome = prime no. = { 1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91,97 }

= 27

Probablity ..

$p(e) = \frac{n(e)}{n(s)}$

$= \frac{27}{100}$

$= 0.27$