8 messages · Page 1 of 1 (latest)
why does it say 20 pairings?
what theyve done is added together the first term of the sequence and the last
then the second term and the second last
then the third and the third last ...etc.
andd all of these sums add to $2.54
and there are 20 sums in total so u multiply by 20
ohhhhh that makes sense
thx a lot
summer oxide
runic charm