Question

find the probability tht a no. selected at random from the numbers 1 to 25 is not a prime number when each of the given numbers is equally likely to be selected?​

Answer 1

Answer:

therefore the given number is equally likely to be selected is 1

Answer 2

Total number of outcomes = 25

Non Favourable outcomes = 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 = 9

Favourable outcomes 25 - 9 = 16

$probability = \frac{number\: of \: favourable \: outcomes \: }{total \: number \: of \: outcomes} \\ probability \: = \frac{16}{25}$

there you go :)