Question

a two digit number is formed with the digits 2 3 5 7 9 without repetition what is the probability that the number formed is an odd number and a multiple of 5​

Answer 1

Answer:

P(A)= 4/5 P(B)= 1/5

Step-by-step explanation:

S= { 23,25,27,29,32,35,37,39,52,53,57,59,72,73,75,79,92,93,95,97}

n(s)= 20

A={ 23,25,27,29,35,37,39,53,57,59,73,75,79,93,95,97}

n(a)= 16

P(A)= n(a)/n(s)

= 16/20

P(A)=4/5

B={ 25,35,75,95}

n(b)= 4

P(B)= n(b)/n(s)

= 4/20

P(B)= 1/5