 |
Home > Just Math
These problems are mostly math-related. That's not to say that they're all straightforward. You'll still need to flex your noggin to figure them out!
|
N = (1!)*(2!)*(3!)*(4!)*.....*(21!)*(22!).
Precisely 2 of the 22 factorials needs to be removed from N to make it a perfect square.
What two factorials need to be removed? Provide adequate reasoning for your answer.
|
Page 77 of 171 |
<< prev
next >>
|
 Square Sum and Square Multiple | Rating: 5.00 Posted on 2015-09-13 by K Sengupta (Solution Posted, 2 Comments)Expression Divides Expression | Posted on 2015-09-12 by K Sengupta (No Solution Yet, 1 Comments)  Prime Ratio Possibility | Rating: 5.00 Posted on 2015-09-11 by K Sengupta (Solution Posted, 3 Comments)Talk to me | Posted on 2015-09-10 by Ady TZIDON (No Solution Yet, 1 Comments) LCM and Equality Puzzle | Rating: 5.00 Posted on 2015-09-07 by K Sengupta (Solution Posted, 1 Comments) Quadratic and Quartic Query | Rating: 4.00 Posted on 2015-09-06 by K Sengupta (No Solution Yet, 3 Comments) Simultaneous Pythagorean Poser 2 | Rating: 5.00 Posted on 2015-09-05 by K Sengupta (Solution Posted, 4 Comments) Arithmetic and Power Puzzle | Rating: 3.00 Posted on 2015-09-02 by K Sengupta (Solution Posted, 2 Comments) Ratio Sum Equals Positive Integer | Posted on 2015-08-30 by K Sengupta (No Solution Yet, 3 Comments) Root Difference and Seventeen Puzzle | Rating: 4.00 Posted on 2015-08-29 by K Sengupta (Solution Posted, 3 Comments) Year and Perfect Square Puzzle | Rating: 5.00 Posted on 2015-08-22 by K Sengupta (Solution Posted, 2 Comments) Perfect Square Digit | Rating: 5.00 Posted on 2015-08-17 by K Sengupta (Solution Posted, 2 Comments) Infinite Triplet and Perfect Square | Rating: 3.00 Posted on 2015-08-16 by K Sengupta (No Solution Yet, 3 Comments) Positive Perfect Cube Sum | Posted on 2015-08-15 by K Sengupta (No Solution Yet, 3 Comments) Non-perfect Cube Root Sum | Rating: 5.00 Posted on 2015-08-14 by K Sengupta (Solution Posted, 6 Comments) |
|
Please log in:
Forums (0)
Newest Problems
Random Problem
FAQ |
About This Site
Site Statistics
New Comments (18)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On
Chatterbox:
|
