Question

a number is selected from the first 10 natural numbers the problem that a number is divisible by 2 is​

Answer 1

First 10 natural numbers

S = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 }

So n(S) = 10

Let set A be a set of numbers divisible by 2 from set S

A = { 2 , 4 , 6 , 8 , 10 }

So n(A) = 5

We know the formula that

P(A) = n(A)/n(S)

P(A) = 5/10

P(A) = 1/2

a number is selected from the first 10 natural numbers the probability that a number is divisible by 2 is 1/2.