Question Number: #Com2333

Answer the question based on the information given below:

Let S be the set of all pairs (i, j) where, 1 ≤ i < j ≤ n and n≥4. Any two distinct members of S are called “friends” if they have one constituent of the pairs in common and “enemies” otherwise. For example, if n = 4, then S = {(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)}. Here, (1, 2) and (1, 3) are friends, (1, 2) and (2, 3) are also friends, but (1, 4) and (2, 3) are enemies.

Question: For general ‘n’, consider any two members of S that are friends. How many other members of S will
be common friends of both these members?

A.) Option 1
B.) Option 2
C.) Option 3
D.) Option 4

Answer is option : D

Question Related Topics:
Quantitative Ability
Loading Please Wait
Recommended For You

Logo of FillandFind Mobile Application Now on Mobile's Android Application to get Latest Information on admissions, exams, courses colleges. Rank and College Predictors and much more
Continue to Website Continue to website