"What Is the Missing Number?"
Give This Brain Teaser One Minute's Effort
Here you have numbers that are arranged in circles. Discover the rule in the number sequence starting with "2" and determine the missing number.
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The answer is "47".
Starting with the lower-left number "2," double it and add "1."
Doing the same to each of the successive numbers gets similar results.
To determine the missing number, double "23" and add "1" to it.
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