A group of 22 travellers were each required to obtain a passport, a health certificate and convertible currency equivalent to fifty dollars 12 have the passport, 14 had health certificate and ll, the corrency. 6 had passport and currency, 6 had passport and certificate and I travellers had at least one of the three requirements
a) Draw a venn diagram to illustrate the information.
b) Find the number who had; i All the three requirements.
* Exactly two requirements.
a) Here is the Venn diagram to illustrate the information:
```
Currency
________________
| |
| 6 | 5
| |
Passport|______6_________|_______1
| |
| |
|_____1__________|____14
Health Certificate
```
b)
- Number of travellers who had all three requirements = 1
- Number of travellers who had exactly two requirements = (6 + 1 + 5) = 12