Question

25. Cards numbered
of Cards numbered to go are kept in a box, find
probability that the number on the drown!
card is
(a) a perfect square number
(b) a prime number less than 20​

Answer 1

Answer:

n(S) = 25

n(P) = { 1,4,9,16,25} = 5

p(P) = 5/25 = 1/5

n(N) = { 2,3,5,7,11,13,17,19}  = 8

p(N) = 8/25