Which of the following numbers should not be included in the set?
331, 482, 551, 263, 381, 242, 111 Options
A) 263  B) 381  C) 242  D) 111  E) None of these
Solution   In each number except 381,the product of first and third digits is the middle one. Answer 381
<result>B</result>
Which of the following numbers should not be included in the set?
331, 482, 551, 263, 381, 242, 111