Question

2 to 20 are written on separate cards one card is picked randomly find the probability of getting prime number​

Answer 1

Answer:

19/8  

Step-by-step explanation:

Let F be event of  a card with prime number from the cards with numbers 2 to 20

Prime numbers from 2 to 20=2,3,5,7,11,13,17,19

No. of favorable outcomes=8

Total no. of possible outcomes =19

We know that, Probability P(F) =  (Total no.of possible outcomes) /(No.of favorable outcomes)

=  19/8

​ I THINK THAT'S IT

​  

Answer 2

Answer:

8/19

Step-by-step explanation:

Possible outcomes= 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

Favorable outcomes= 2,3,5,7,11,13,17,19

Probablity= $\frac{(No.of favorable outcomes)}{(No. of possible outcomes)\\}$

∴ Probablity= 8/19