Question

a box contain 20 card bearing number 1,2,3....20. A card is drawn at random from the box.what is the probability that the number on the card is. i) an odd ii) divisible by 2or3 iii) prime number iv) not divisible​

Answer 1

Answer:

i=1/2 , ii= 13/20 , iii 2/5, iv= 9/10