On the Subject of Missing Sequence
Hold up, these numbers aren't consistent. Where's the pattern?
Initially, the module contains a black, blank screen.
When pressed, the screen will show six rows of horizontally scrolling rectangles.
Each row contains six differently coloured rectangles. Most rectangles contain a number, but a few of them contain a question mark instead.
From top to bottom, the rectangles that share the same colour on each of the rows form a number sequence. Deduce and submit the number that should replace the question mark in the sequence for each colour to solve the module.
The pattern in the sequence may not be obvious at first glance. Refer to the next page for some examples that may come up in the module.
The pattern usually relates with one (or more) of the following:
- Arithmetic and geometric offsets
- Prime numbers
- Recursive functions, e.g. Fibonacci sequence
- Perfect squares, perfect cubes
- Digital roots, Sum of digits, Product of digits
- Factors, mainly prime factors of numbers
Note that all the terms would always be integers.
Once you have all the answers ready, press the screen to enter submission mode. Note that the only way of getting back to the scrolling state is to strike on the module, so be careful!
In submission mode, the screen shows the six colored rectangles from the earlier state, but their values have been defaulted to 0.
The currently selected rectangle is denoted by the yellow highlight around it. Enter the value that belongs to the colour rectangle using the keypad on the right. Press the gray button to negate the value.
Note that all rectangles only accepts four digits. Leading zeros are always removed too.
To select a different rectangle, press the green button.
Press the screen again to submit the six values. If all of them are correct, the module will solve. Otherwise, the module will show the wrongly inputted rectangles in red, and then change back to its scrolling state. The module doesn't reset.
After a strike, the module only requires you to input incorrect values. This means the correct submitted rectangles will not be selected.