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Name: CAPTCHA SAM (327 downloads) Bookmark or share this page
Member: b_birak (find more CAPTCHAs from this author)
Description: CAPTCHA that uses Subtraction, Addition and Multiplication. The user needs to work out the answer by grabbing the 2 numbers from the grid references and performing the correct mathematical equation. Once the answer is calculated and confirmed it is verified.

Please note that negative answers are also allowed.
Categories: Puzzle, Questions,
Clarity: 4.6 out of 5
Calculations: 4.0 out of 5
Link: download
Date Added: 24 Jun 2008 17:31:10 BST
Format: PHP,

Shown below is the feedback our members have left (if any) regarding any aspect of this CAPTCHA. If you would like to share your thoughts, please sign in. If you do not have an account yet, you can register for FREE.


Feedback from members:

ben - 30 Apr 2016 17:38:00 BST

Ok, nice...