Find the Missing Number, If Possible $$| ? | = 21$$

question 452

Multiple Choice

Find the missing number, if possible. There may be more than one number that works, so find as many as possible. If
no number works, write ʺNo number possible.ʺ
- $$| ? | = 21$$

• A) \(- 21,21\)
• B) \(\frac { 1 } { 21 }\)
• C) 21
• D) \(- 21\)

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