Advanced Math practice question

Answer: 49

9ˣ = (3²)ˣ = (3ˣ)² = 7² = 49.

Common wrong answers

If you answered 14

14 doubles 7, treating 9ˣ as 2 · 3ˣ.

If you answered 21

21 is 3 × 7.

If you answered 63

63 is 9 × 7.

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