Multiple choice

The length of a rectangle is 2 cm. By what number, the length of the rectangle should be multiplied so that the area of the rectangle remains a prime number?

  1. 1

  2. 2

  3. 3

  4. 4
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A Correct answer
Explanation

Length of rectangle = 2 cm, so it should be multiplied by 1, so that 2 x 1 = 2 is a prime number. Length = 2 cm, width = 1 cm, Area = 2 x 1 = 2 cm2 (a prime number)

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