1000 families with 2 children were selected randomly and the following data were recorded.
`|{:("Number of boys in a family"," 0 1 2"),("Number of families"," 140 560 300"):}|`
If a family is chosen at random, find the probability that it has
(i) no boy
(ii) one boy
(iii) two boys
(iv) at least one boy
(v) at most one boy.

Explanation

To solve the problem step by step, we will calculate the probabilities for each scenario based on the given data about families with children.

### Given Data:
- Total families = 1000
- Number of boys in a family:
- 0 boys: 140 families
- 1 boy: 560 families
- 2 boys: 300 families
...