Question

A fair die is thrown once the probability of getting a prime or composite number is

Answer 1

no. of composite no. in die = 2
no. of prime no.s = 3
total no.s =6
1) probability of getting. prime no or composite no . = 5/6

Answer 2

Answer:

$\frac{5}{6}$

Step-by-step explanation:

Numbers on dice = {1,2,3,4,5,6}

Out of these numbers , Prime numbers are {2,3,5}

Since 1 is not a prime or composite number .

So, excluding 1 the remaining are composite .

Composite numbers on dice = {4,6}

Total events = 6

Favorable events = prime numbers = {2,3,5}=3

Probability of getting prime number = $\frac{3}{6}$

Favorable event = getting composite number = {4,6}=2

So, probability of getting composite number = $\frac{2}{6}$

Now the probability of getting a prime or composite number :

$\frac{3}{6}+\frac{2}{6}$

$\frac{5}{6}$

Hence the probability of getting a prime or composite number is $\frac{5}{6}$