Question

There are thrity cards of same size in a bag of which numbers 1 to 30 are written one card is taken out from the bag at the random find the probability that the number on selected on the card is not divisible by 3

Answer 1

15 then it went to 5

Answer 2

Total cards =30

Number on cards not divisible by 3 :

1,2,4,5,7,8,10,11,13,14,16,17,19,20,22,23,25,26,28,30

Total number not divisible by 3 = 20

So the probability in 20/30 or 2/3