Question

Find the wrong term of the series :

$2,3,10,15,26,35,48,63,82$

• A. $48$
• B. $26$
• C. $63$
• D. $82$

Answer 1

The correct option is A $48$

Here, the pattern is: ${\left(oddnumber\right)}^2+1$ and ${\left(evennumber\right)}^2-1$
Therefore, $1^2+1$ = 2,
$2^2-1$ = 3,
$3^2+1$ = 10,
$4^2-1$ = 15,
$5^2+1$ = 26 and so on.
Clearly, $7^2+1$ = 50
Hence, option (A) is the correct answer.