Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. 0.000007 m
   2. 0.005 cm
   3. 20 mm
   4. 0.000003 m

   Odd item

   20 mm

2. Items

   1. a^(mn)
   2. a^m x a^n
   3. a^(m+n)
   4. Same base rule

   Odd item

   a^(mn)

3. Items

   1. 10^-1
   2. 10^-2
   3. 10^-3
   4. 10^2

   Odd item

   10^2

Instructions

Tap the one that does not belong with the rest.

Explanation