Question

Find out the wrong number in the series given below :
$1,2,8,33,148,760,4626$

• A. $8$
• B. $2$
• C. $760$
• D. $148$

Answer 1

The correct option is C $760$

$\text{2nd term}=\text{1st term}\times 1+1^2=1\times 1+1^2=2$
$\text{3rd term}=\text{2nd term}\times 2+2^2=2\times 2+2^2=8$
$\text{4th term}=\text{3rd term}\times 3+3^2=8\times 3+3^2=33$
$\text{5th term}=\text{4th term}\times 4+4^2=33\times 4+4^2=148$
$\text{6th term}=\text{5th term}\times 5+5^2=148\times 5+5^2=765\ne 760$
$\therefore 760$ is wrong.