Two different natural numbers are such that their product is less than their sum. One of the numbers must be

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  1. 1
  2. 2
  3. 3
  4. None of these

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Option 1 : 1
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Given:

Two different natural numbers are such that their product is less than their sum. One of the numbers must be 1.

Concept Used:

For two natural numbers, a and b, if their product is less than their sum, then ab < a + b. To satisfy this condition, one of the numbers must be 1.

Calculation:

Let the two different natural numbers be a and b, where a < b.

⇒ ab < a + b

To satisfy the inequality, assume a = 1:

⇒ 1b < 1 + b

⇒ b < 1 + b

Since this inequality is always true for any natural number b, one of the numbers must be 1.

∴ The correct answer is option 1.

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