Which number continues the sequence of square numbers? 16, 25, 36, 49, 64, ...
Answer and explanation
Correct answer: B. 81
- Step 1: These are the squares of consecutive whole numbers. Step 2. The next number is 9 x 9 = 81. Answer: 81. Why not the others: 80: the wrong difference was used. 82: the square was off by one. 18: the number was doubled instead of squared.
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