x, y and z are three positive integers such that x > y > z. Which of the following is closest to the product xyz?
Explanation:
Going by the options:
(a) (x - 1)yz = xyz − yz
(b) x(y - 1)z = xyz - xz
(c) xy(z - 1) = xyz - xy
(d) x(y + 1)z = xyz + xz
Here, yz will be minimum out of yz, xz, xy, xz as x > y > z
Hence, option (a).
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