there are seven villages and a company wants to connect all villages t

1.	there are seven villages and a company wants to connect all villages to each other. find number of lines needed to connect all villages
Answer» first village has to connect with rest of 6 2nd village has to connect with then 5 as it has got connected with the first one , so 5 lines similarly 3rd → 4 , 4th→ 3 , 5th→2 6th→1 . so, total lines are 6+5+4+3+2+1 = 21 thank you very much

there are seven villages and a company wants to connect all villages to each other. find number of lines needed to connect all villages

Answer»

first village has to connect with rest of 6 2nd village has to connect with then 5 as it has got connected with the first one , so 5 lines

similarly 3rd → 4 , 4th→ 3 , 5th→2 6th→1 .

so, total lines are 6+5+4+3+2+1 = 21

thank you very much