Example GIF

Square of 3 - Matchstick Puzzle

30.Matchstick Puzzles
Add one matchstick to create square of 3. 
Square_of_3_Matchstick_puzzle
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      Explanation :

        Move one stick from the + sign and move it to five so, It becomes 9 - 7 = 2.
      Solved_Answers_Square_of_3_Matchstick_puzzle
      Answers_Square_of_3_Matchstick_puzzle