Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. Workers and days
   2. Taps and time
   3. Hours and wages

   Odd item

   Hours and wages

2. Items

   1. The workforce is fixed
   2. The job is fixed
   3. The route is fixed

   Odd item

   The workforce is fixed

3. Items

   1. Halves the time
   2. Doubles the job
   3. Doubles the workers

   Odd item

   Doubles the job

Explanation