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Still an A.P. or not

Exercise and reference answers

Left
Still A.P.
Items
  1. Item
    Add a constant
    Answer
    Still A.P.
  2. Item
    Subtract 5
    Answer
    Still A.P.
  3. Item
    Multiply by 3
    Answer
    Still A.P.
  4. Item
    Divide by 2
    Answer
    Still A.P.
  5. Item
    Square each term
    Answer
    Not A.P.
  6. Item
    Take reciprocals
    Answer
    Not A.P.
Right
Not A.P.
Instructions
Swipe left if the result stays an A.P., right if not.

Explanation

_Source: syllabus Mathematics, Chapter 9, Sequences and Series._
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