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Which of the following is a whole number?\newlineChoices:\newline(A) 7.5557.555\newline(B) 7\sqrt{7}\newline(C) 2.942.94\newline(D) 1010

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Checkpoint: Rational and irrational numbersright chevron icon

Full solution

Q. Which of the following is a whole number?\newlineChoices:\newline(A) 7.5557.555\newline(B) 7\sqrt{7}\newline(C) 2.942.94\newline(D) 1010
  1. Analyze 7.5557.555: Analyze choice (A) 7.5557.555.\newline7.5557.555 has digits after the decimal point, which means it is not a whole number.
  2. Analyze 7\sqrt{7}: Analyze choice (B) 7\sqrt{7}. The square root of 77 is not a whole number because 77 is not a perfect square.
  3. Analyze 2.942.94: Analyze choice (C) 2.942.94.\newline2.942.94 has digits after the decimal point, which means it is not a whole number.
  4. Analyze 1010: Analyze choice (D) 1010. 1010 has no digits after the decimal point and is a non-negative integer, which means it is a whole number.

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