Discussion of Question with ID = 024 under Problems-on-Numbers

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Question

The sum of three consecutive even integer numbers is 672. The middle among the three is?

A

224.

B

225.

C

223.

D

226.

Soln.
Ans: a

Let the numbers be 2n - 2, 2n and 2n + 2. The sum is 6n = 3 x 2n = 3 x middle. We are given 3 x middle = 672, ⇒ middle = $672/3$, i.e., middle = 224.


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