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What is the square of 13?

  1. 169

  2. 144

  3. 196

  4. 121

The correct answer is: 169

The square of a number is obtained by multiplying the number by itself. In this case, when calculating the square of 13, you perform the operation 13 times 13. Following the multiplication: 13 x 13 = 169. This means that 169 is the correct answer as it represents 13 squared. The other options represent the squares of different numbers: 144 is the square of 12, 196 is the square of 14, and 121 is the square of 11. Each of these numbers does not correspond to the operation of squaring 13 and thus do not reflect the correct answer.