400 tourists were surveyed and asked which of the following mountains, if any, they had visited.
- Scafell Pike
- Ben Nevis
67 of the visitors had visited Snowdon and Scafell Pike and, of these, 8 had visited all three mountains.
23 people had visited Ben Nevis and Scafell Pike but not Snowdon.
125 of the people had visited Ben Nevis.
137 of the people had visited Snowdon.
Some further information is given on the Venn diagram below. How many visitors did not visit any of the three mountains?