Spot the term that breaks the progression

Exercise and reference answers

Questions

1. Items

   1. 9
   2. 2
   3. 4
   4. 6
   5. 10

   Reason

   9 breaks the arithmetic progression with common difference 2.

   Odd item

   9

2. Items

   1. 3
   2. 50
   3. 6
   4. 12
   5. 24

   Reason

   50 breaks the geometric progression with ratio 2 (should be 48).

   Odd item

   50

3. Items

   1. 1
   2. 1/2
   3. 1/15
   4. 1/4
   5. 1/8

   Reason

   1/15 breaks the GP with ratio 1/2 (should be 1/16).

   Odd item

   1/15