Question

A box contains cards numbered from 1-20 .A card is drawn at random .Find the probablity of getting a prime number, a composite number , a number divisible by 3

Answer 1

hey mate!

here is your answer:

total number of outcomes=20

1. favourable outcomes=8

probability of getting a prime number=8/20=2/5

2. favourable outcomes =11

probability of getting a composite numer=11/20

3.favourable outcomes =6

probability getting a multiple of 3=6/20=3/10

hope it helped ^_^

Answer 2

To getting a prime no. Outcomes are 2,3,5,7,11,13,17,19

Probability = favourable outcome/total outcome =8/20=2/5

Composite no.=4,6,8,9,10,12,14,15,16,18,20

Probability =12/20=3/5


No. Divisible by 3 are 3,6,9,12,15,18

Probability =6/20=3/10


Hope it will help mark me brainliest