Question

Surabhi is playing with card number 1 to 20 see places the card face down and then open the top cards what is the probability that the card which is open will be a a card with a number having digit 2​

Answer 1

Your answer is 1/2 as 10/20 = 1/2

Answer 2

if you ask about 2 digits then probability is 11/20

and you ask about digit no. (2) then the probability is 3/20