Three consecutive whole numbers are such that product of smallest and the largest number is one less than the square of the middle number. Find the middle number.
Explanation:
Let the middle number be ‘a’.
According to the question: (a – 1)(a + 1) = a2 - 1 ⇒ a2 – 1 = a2 - 1
Now, this is true for all values of ‘a’.
Hence, option (e).
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