1 votes 1 votes How many minimum number must be chosen from a set {1,2,3,...8} such that at least 2 of them must have sum=9? mystylecse asked Sep 9, 2017 mystylecse 220 views answer comment Share Follow See 1 comment See all 1 1 comment reply saxena0612 commented Sep 9, 2017 reply Follow Share 5 numbers.! 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Let us see which pair can give you 9 (1,8),(2,7)(3,6),(4,5) So let us take 2 set A={1,2,3,5,X} B={8,7,6,5,Y} Now since repetition is not allowed this for any value of X or Y there will be a pair which will give you 9 Tesla! answered Sep 9, 2017 Tesla! comment Share Follow See all 0 reply Please log in or register to add a comment.