Look At This Sequence; I6, 06, 68, 88, X, 98
Riddle: Look at this sequence; I6, 06, 68, 88, X, 98. What does the X represent?
Answer: The answer is 87, in order to solve this you need to look at the numbers upside down. The sequence comes out to be 86, ?, 88, 89, 90, 91; therefore the ? is 87.
Source: https://www.riddles.com/index.php/6670
