I am a number that appears to strut,
When doubled, I feel tight,
Shift me a step, and I become less,
Reveal me, and I'm right. What am I?
?Tap to reveal the answer

The Answer
The number 9. (Struts as a '9', doubles to '18' feeling 'tight' due to the even number. Shift one step down to '8' makes it less, revealing as 'nine' fits the phrase.)
The answer is 9. Nine "struts" because it looks tall and confident as a digit; doubled to 18, the digits sum back to 9 (1+8=9), a trick unique to multiples of 9. Shifting one step down gives 8, which is less — and "nine" is revealed as right.
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