Which of the following numbers should not be included in the set?
331, 482, 551, 263, 384, 242, 111  Select
A) 263 B) 384 C) 242 D) 111 E) None of these
Solution   In each number except 384,the product of first and third digits is the middle one. Answer 384
<result>B</result>
Which of the following numbers should not be included in the set?
331, 482, 551, 263, 384, 242, 111