[Daily puzzle] How many pairs?
658 sats \ 6 comments \ @south_korea_ln 9 Nov science
How many pairs of positive integers (m,n) are there such that
Previous iteration: #758788 (reasoned answer in #758876, coding answers in #759215 and #758854).
Recommended bonus problem, by @bordalix (#751819 with answer in #760089).
A friend of mine has 2 daughters (not twins) under 10 years old and wants you to guess the sum of their ages, but the only clue he gives is that the last digit of the product of their ages is the number of their house's door.
Try to solve it here before looking at the answer. It is solvable!
write
preview
related posts
151 sats \ 2 replies \ @bordalix 9 Nov
11
reply
1 sat \ 1 reply \ @Scroogey 9 Nov
I think those are the ones based on
But there are more based on like
reply
301 sats \ 0 replies \ @Scroogey 9 Nov
We can choose from any number of factors and as long as they are even (including 0), therefore the total number of combinations is .
reply
42 sats \ 2 replies \ @Aardvark 9 Nov
This one has to be 42. I'm Positive
reply
6 sats \ 1 reply \ @south_korea_ln OP 10 Nov
One day... one day it'll all pay off.
reply
0 sats \ 0 replies \ @Aardvark 10 Nov
It has to right? As long as you ask an infinite amout of questions, I'm pretty much guaranteed to get it correct.
reply