Question

Find the wrong term of the series :

$89,78,86,80,85,82,83$

• A. $83$
• B. $82$
• C. $86$
• D. $78$

Answer 1

Answer: (C)

$86$

The given series 89, 78, 86, 80, 85, 82, 83 consists of two series.
1st series: 89, 86, 85, 83 2nd series: 78, 80, 82
In the 1st series, each of the term is decreased by 2 and in the second series, each of the next term is increased by 2.
Clearly, 89 - 2 = 87 $\ne$86
Hence, option (C) is the correct answer.