What number comes next?
1, 3, 5, 7, ...
Be Aware! I haven't used the normal formula! It is harder than you think!
If you're so keen, then why don't you figure out my formula and get the number!
Is the answer 9?
NO! BE AWARE!
There are many answers to this.
E.g.
-1 + 3
Shall I tell you the number to help you get the formula...
The REVEALING of the number...
217341
NOW try & solve it!