Question

Find the missing numbers :

$25,49,89,145,217,(?)$

• A. $305$
• B. $327$
• C. $309$
• D. $303$

Answer 1

The correct option is A $305$

Option A is the correct answer.
Explanation:
The series is in the following form:

$49-25=-24=4\times 6$

$89-49=40=4\times 10$

$145-89=56=4\times 14$

$217-145=72=4\times 18$

Following the series next number will be

$4\times 22=88$

Hence we will add $88$ to previous number:

$217+88=305$

Hence $305$ will be the next number