Calculate 81 − 9.
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✅ Correct answer: B. 72
a: 74 | b: 72 | c: 77 | d: 70
10 random questions, instant feedback, earn XP.
Tap an option to check your answer.
✅ Correct answer: B. 72
a: 74 | b: 72 | c: 77 | d: 70
10 random questions, instant feedback, earn XP.