Questions tagged [seven-segment]

A puzzle that involves seven-segment displays, more commonly referred to as "digital" displays.

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4 votes
2 answers
272 views

Dark time in prison

You wake up. It is pitch dark. You don't know where you are. You feel groggy. The last thing you remember is being in a bar, a sexy young woman appeared out of nowhere, walked straight at you, ...
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2 votes
3 answers
260 views

Reversible number problem

These are the reversible numbers In this example we have an operation that on one side gives the result 6 and turning it gives it 12. Is it possible using reversible numbers and mathematical ...
5 votes
1 answer
244 views

Seven-Segment Telephone

The ideas and concocted tools I used to solve these two puzzles allowed me to make this puzzle. Credit to TSLF for the inspiration! Light up some of the edges in the grid on the left such that the ...
  • 3,918
4 votes
1 answer
289 views

Number Box Puzzle

All digits from 0-9 as shown are 1 in. thick and within 3x5 in.dimesion except number 1. The task is to put all the numbers inside the square box with smallest dimension nxn without overlapping of ...
  • 6,606
12 votes
2 answers
440 views

Square Crayon Sticks

Ten sets of crayons forming all the digits from 0 to 9 can be moved, flipped, rotate and intersect without changing their digital forms. What is the maximum number of 1x1 stick squares that can be ...
  • 6,606
12 votes
4 answers
458 views

Fitting 7 Segments Digits on Smallest Rectangular Grid

On the 2 x 1 grid all 7- segment digits above can be formed one at a time as seen on clocks, calculators and other digital devices. If we are allowed to flip or rotate and overlap segments, how should ...
  • 6,606
6 votes
2 answers
437 views

Seven Matches Digits

a) Remove some of the match sticks from the above 2 x 2 x 1 surface grid to reveal the figures below. Rotation, flipping, segment sharing are allowed. b) Place some match sticks on the above 1 x 1 x ...
  • 6,606
5 votes
1 answer
350 views

Sticking Numbers

Try to figure out the answers from the 2 patterns below. Find all the 10 digits first. Rotate if necessary. A: What is the missing number? [?] [10] [11] [9] [11] B- What is ...
  • 6,606
0 votes
5 answers
268 views

What is the largest possible positive number on an 8-segment array? (repeated symbols allowed) [closed]

This is a follow-up to the question, What is the smallest possible positive number on an 8-segment array? However, this time repeats are allowed! You are provided with the 8-segment array in the ...
5 votes
7 answers
1k views

What is the smallest positive number on an 8-segment array? (no repeats) [closed]

You are provided with the 8-segment array in the picture together with all the necessary electronics to make any combination of lit segments you want. Fillable version for graphics. http://i.stack....
27 votes
1 answer
2k views

Smashing Seven Segments

The Setup Consider a 5-by-5 grid of 7-segment displays, "smashed together" so that the peripheral segments of neighbouring displays overlap (see below).             ...
  • 9,973
9 votes
1 answer
1k views

Seven Segment Cipher

In math class I asked my friend what she did for a job. She simply handed me this note. What does it say? Note: You may need a calculator! Then again, you may not...
  • 13.7k
12 votes
6 answers
9k views

Greatest Digital Clock Number, with a Twist!

7 segments make up a number, some visible, some invisible. Just like on a digital clock: 88:88 or 04:00: There are 2 vertical segments on both sides and 3 horizontal segments in the center. What's ...
  • 14.2k
15 votes
3 answers
2k views

The defective clock

James has a defective clock in his room. The clock is digital, and some of the seven bars on its units digit are broken. A bar that works is on when it should be and off when it should be, whereas a ...
  • 2,086