Concept:In a number series, find the pattern of differences and identify the number that breaks it.Explanation:The expected pattern is subtracting 5, then 10, then 15, then 20.Check the terms: 82−5=77.Next: 77−10=67.Next should be: 67−15=52.But the given series has 62 in this place.Then: 52−20=32, which matches the last term.So 62 is the wrong number and should be replaced by 52.Answer:The odd number is 62 (Option B).