Spot the intruder

Exercise and reference answers

Questions

1. Items

   1. 8 = 2^3
   2. 16 = 2^4
   3. 32 = 2^5
   4. 9 = 2^3

   Odd item

   9 = 2^3

2. Items

   1. root12 = 2root3
   2. root8 = 2root2
   3. root18 = 3root2
   4. root6 = 2root3

   Odd item

   root6 = 2root3

3. Items

   1. LCM
   2. Common denominator
   3. Adding fractions
   4. Simplifying a ratio

   Odd item

   Simplifying a ratio

Instructions

Three belong together. Tap the one that does not.