Question

Number 1 to 10 are written on ten separate slips (one number on one slip ) kept in a box and mixed well. One slip is chosen from the box without looking into it . what is the probability of getting a
i) multiple of 3
ii) prime number
iii) 2 digit number​

Answer 1

Step-by-step explanation:

n(s)= {1,2,3,4,5,6,7,8,9,10}

n(S)= 10

Let event A = Multiple of 3

n(a)= {3,6,9}

n(A)= 3

P(A)= n(A)/n(S) = 3/10

Let event B = prime number

n(b)= {1,2,3,5,7}

n(B)=5

P(B)=n(B)/n(S)=5/10=1/2

Let event C = 2 digit number

n(c)={10}

n(C)=1

P(C)=n(C)/n(S)=1/10