Question

a box containing 20 cards bearing from numbers 1,2,3 .....20
A card is drawn random from the box. find the probability of that number on the card
1) prime number
2) neither divisible by 5 or 10
3)an even number

Answer 1

Answer:

1. P(prime number) = 8/20 or 2/5

2. P(neither by 5 nor by 10) = 16/20 or 4/5

3. P(an even no.) = 10/20 or 1/2

Thank you! Hope it helps.

Answer 2

ANSWER...
refer to attachment above