1.

Product of three consecutive odd numbers is 1287. What is the largest of the three numbers?1). 92). 113). 134). 17

Answer»

Let the 3 numbers be n - 2, n, n + 2

⇒ (n - 2)(n)(n + 2) = 1287

⇒ (n2 - 4)(n) = 1287

⇒ n3 - 4n - 1287 = 0

⇒ n = 11 is the only odd NUMBER that is the root of above equation

So, the largest number = n + 2 = 11 + 2 = 13


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