Spot the one that does not fit

Exercise and reference answers

Questions

1. Items

   1. Row matrix
   2. Identity
   3. Scalar
   4. Symmetric

   Odd item

   Row matrix

2. Items

   1. Same order
   2. Same entries
   3. Equal matrices
   4. Different sizes

   Odd item

   Different sizes

3. Items

   1. Transpose
   2. Rows to columns
   3. A prime
   4. Determinant

   Odd item

   Determinant

4. Items

   1. Skew symmetric
   2. Zero diagonal
   3. Minus transpose
   4. Ones on diagonal

   Odd item

   Ones on diagonal

Instructions

Tap the item that does not belong with the rest.

Explanation