If an ant has six legs, then:
- Two ants have 12 legs
- Three ants have 18 legs
- Four ants have 24 legs
- Five ants have 30 legs
- Six ants have 36 legs
- Seven ants have 42 legs
- Eight ants have 48 legs
- Nine ants have 54 legs
So, if you saw between 35 and 50 legs, there are between six and eight ants.