Question

Numbers 2 to 21 are written on different cards. A card is selected
from them at random. Find the probability that card will be:
(i) a multiple of 5
(ii) an even number
(iii) a prime number
(iv) a number greater than 16​

Answer 1

Answer:

i) 4/20=1/5

ii) 10/20=1/2

iii) 9/20

iv) 6/20=3/10