Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. Pens and cost
   2. Sugar and cost
   3. Speed and time
   4. Articles, cost

   Odd item

   Speed and time

2. Items

   1. Taps and time
   2. Workers and days
   3. Speed and time
   4. Weight and cost

   Odd item

   Weight and cost

3. Items

   1. xy = k
   2. x1y1 = x2y2
   3. Inverse
   4. x by y = k

   Odd item

   x by y = k

Instructions

Tap the one that does not belong with the rest.

Explanation