26 light switches flipped by multiples of 1, 2, 3, 4 .... to 26. How many light switches are flipped on?
4592
Prison problem: locking or unlocking every $n$th door for $ n=1,2,3,...$
144025
Number of Solutions in this Number Puzzle
93459
Number of permutations of unspecified length
87211
Light fixture with a switch that has an outlet
140112
How many number of functions are there?
126635
can I put 3 new light fixtures and switches on the same breaker
83811
Relay to switch 50 lines at once?
4301
How many different arrangements?
81120
Counter with 4 flip flops jk synchronous from 3 to 13!
158346
Adding 3 way switches
132921
Counting problem, number of moves
24137
Light Activated Switch
138890
Cool property of the number $24$
85989
Bit swapping probability question
150281
Am I on the right track to figure out this combinatorics problem?
22454
How many combinations can I make?
17263
How to drive 128 LEDs