How many pairs of whole numbers have a sum of 99
Mathematics · College · Wed Jan 13 2021
llm
Answered on
0+99
1+98
....
....
49+50
Then stop
because 49+50 is the same pair as 50+49 and 51+48 is the same as 48+51 (already counted)
50 pairs of whole numbers have a sum of 99