Question

The Key board of mobile has (o to 9) digit on it. find
the probability of getting
1. perfect number
2. composite number
3. even numbers
4. factor of 9 ​

Answer 1

Answer:

perfect number

option 1

i hope it helps u

Answer 2

Answer:

perfect numbers between 0 and 9 are 1

favourable outcomes _ 1

total outcomes_ 9

P=favourable outcomes/total outcomes

=1/9

2.composite numbers between 0 and 9 are 4

favourable outcomes _ 4

total outcomes_ 9

P=favourable outcomes/total outcomes

=4/9

3.even numbers between 0 and 9 are 4

favourable outcomes _ 4

total outcomes_ 9

P=favourable outcomes/total outcomes

=4/9

4.factors of 9 between 0 and 9 are 3

favourable outcomes _ 3

total outcomes_ 9

P=favourable outcomes/total outcomes

=3/9=1/3

hope it helps...