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Nov
30
comment When solving a big Rubik cube (100x100x100), do you reduce the solution to like 50x50x50, and then 25x25x25, and then like 10x10x10 and then 3x3x3?
I don't know. Simply asking. :) Is this a valid strategy i guess.
Nov
29
comment When solving a big Rubik cube (100x100x100), do you reduce the solution to like 50x50x50, and then 25x25x25, and then like 10x10x10 and then 3x3x3?
@NormalHuman Thanks Norman, I add more tags!
Nov
29
revised When solving a big Rubik cube (100x100x100), do you reduce the solution to like 50x50x50, and then 25x25x25, and then like 10x10x10 and then 3x3x3?
added 33 characters in body
Nov
29
asked When solving a big Rubik cube (100x100x100), do you reduce the solution to like 50x50x50, and then 25x25x25, and then like 10x10x10 and then 3x3x3?
Nov
27
awarded  Yearling
Nov
26
accepted Can there be a month with 6 Mondays? (or 6 of any other days?)
Nov
26
asked Can there be a month with 6 Mondays? (or 6 of any other days?)
Nov
21
accepted If my salary grew from \$1,200 a month to \$1,300 a month, did I get \$100/\$1,200 = 8.3 % increase or \$100/\$1,300 = 7.7 % increase?
Nov
21
comment If my salary grew from \$1,200 a month to \$1,300 a month, did I get \$100/\$1,200 = 8.3 % increase or \$100/\$1,300 = 7.7 % increase?
Thanks for the clear explanation. This makes total sense. Your example with doubling salary explains it perfectly!
Nov
21
asked If my salary grew from \$1,200 a month to \$1,300 a month, did I get \$100/\$1,200 = 8.3 % increase or \$100/\$1,300 = 7.7 % increase?
Nov
18
comment Who determines if a mathematical proof is valid?
Wow @ClémentGuérin thanks for explaining. My next question is are there examples of proofs who were accepted but then 100 or 200 years later were discovered to be invalid?
Nov
18
asked Who determines if a mathematical proof is valid?
Nov
18
revised Is it possible to have such date and day combination that doesn't occur on any year ever?
added 17 characters in body
Nov
18
asked Is it possible to have such date and day combination that doesn't occur on any year ever?
Nov
12
comment How many ways can I choose 5 items from 10?
What a nice connection with bit strings. I wonder if $2^n$ pops out somewhere?
Nov
12
comment How many ways can I choose 5 items from 10?
n and k would be balls in the bag. :) n - total balls in bag, k - balls we're picking from bag.
Nov
12
comment How many ways can I choose 5 items from 10?
wow thanks that's a very nice idea!
Nov
12
comment How many ways can I choose 5 items from 10?
That's very interesting! I didn't see that. Now I've a different followup question - Why are we dividing rather than subtracting re-orderings? It feels to me we should remove re-orderings (subtract. like this $\frac{10!}{5!}-5!$) but we're dividing... Why?
Nov
12
comment How many ways can I choose 5 items from 10?
Thanks that makes a lot of sense. I've a followup question. Is there anything that I can count with formula that's simply $\frac{n!}{k!}$?
Nov
12
comment How many ways can I choose 5 items from 10?
@Myath Sorry I mean $\frac{10!}{5!}$ - Im new to this