You start with a zero and try to reach exactly 100 in 4 stages, each stage consisting of either increasing or decreasing your current number by a factorial n!( number like 1,2,6,24,120,720 etc) .
How many sequences exist to accomplish this task?

12 permutations using the tetrad  - 4!, + 2!, + 2!, + 5!); 

Edited on August 21, 2023, 12:13 am

Posted by K Sengupta on 2023-08-21 00:09:54