Subject: General Aptitude · Chapter: Problems on Numbers · Exam: 2006 · Marks: · Difficulty:
The product of three consecutive even numbers when divided by 8 is 720. The product of their square roots is
(a)12 10
(b)24 10
(c)120
(d)None of these
Answer
Answer (as printed): B
Explanation
Let the numbers be x, x + 2 and x + 4. x ( x + 2) ( x + 4) Then, = 720 8 ⇒ x ( x + 2) ( x + 4) = 5760. \ x × ( x + 2) × ( x + 4) = x ( x + 2) ( x + 4) = 5760 = 24 10 .
Explanation as extracted from the printed page; notation may be imperfect.