can’t we choose set with same number like {2,2,2,2} where its avg = 2, and std = 0 and even if we add 2 in this list it will give same std and avg. So, making D have a=c and b>=d would be helpful no?? or am i missing something?
@Leaderboard can you check this feedback please and adjust the Q?
If you add 2, nothing happens to the set, right, because the elements of a set must be unique?
as question has said “set”. There are no repeats in set. Is that the logic?
Yes.
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