Question

Cards marked 1 to 20 are placed in a box and mixed thoroughly. One card is
drawn from the box. Find the probability that number on the card is
(1) an even number
(it) an odd number.
(ill) a number which is a perfect square
(iv) a multiple of 5
(v) a single digit number​

Answer 1

Step-by-step explanation:

1) even numbers = 10

P(even number) = 10/20 => 1/2

2) odd numbers = 10

P(odd number) = 10/20 => 1/2

3) perfect square numbers = 4

P(perfect square) = 4/20 => 1/5

4) multiple of 5 = 4

P(multiple of 5) = 4/20 => 1/5

5) single digit number = 9

P(single digit number) = 9/20