Problem 50897. Draw a '9' in a zero matrix!

• Created by Szász Botond
• Appears in 3 groups

×

By solving this problem, you will make progress in the following group(s)

Board Games I

• 16 Problems
• 21 Finishers

Classic Game Puzzles

• 11 Problems
• 14 Finishers

Chess

• 18 Problems
• 4 Finishers

Like (1)

Difficulty:

(6162)

Rate

• Solve Later   
• Add To GroupÂ

Given a x-by-x matrix filled with zeros (x is odd and > 3). Use 9s to draw a number 9 into it! Like this:

x = 5, y =

9 9 9 9 9

9 0 0 0 9

9 9 9 9 9

0 0 0 0 9

9 9 9 9 9

x = 7, y =

9 9 9 9 9 9 9

9 0 0 0 0 0 9

9 0 0 0 0 0 9

9 9 9 9 9 9 9

0 0 0 0 0 0 9

0 0 0 0 0 0 9

9 9 9 9 9 9 9

Solve

Solution Stats

74.7% Correct | 25.3% Incorrect

• 664 Solutions
• 487 Solvers

Last Solution submitted on Mar 27, 2025

Last 200 Solutions

Solution Comments

ANNOUNCEMENT ×

Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025

Hello Community, We're excited to announce that registration is now open for the...

Problem Recent Solvers487

Suggested Problems

• Column Removal

  26020 Solvers

• Determine whether a vector is monotonically increasing

  21365 Solvers

• Sum of diagonal of a square matrix

  1590 Solvers

• Sum of series II

  1603 Solvers

• Find Closest Constant

  515 Solvers

More from this Author12

• Draw a '2' in a zero matrix!

  482 Solvers

• Draw a '3' in a zero matrix!

  498 Solvers

• Draw a '1' in a zero matrix!

  557 Solvers

• Draw a '7' in a zero matrix!

  495 Solvers

• Draw a '0' in a one matrix!

  1415 Solvers