Correct Answer - Option 1 : 33

The average age of all 5 members of the family is 25 years while the average age of 2 members of this family is 13 years.

∴ Total age of the 5 members = 25 × 5 = 125 years

and, total age of the 2 members = 13 × 2 = 26 years

∴ Total age of the remaining 3 members of the family = 125 – 26 = 99 years

∴ Average age of the 3 members = 99/3 = 33 years

Hence, ‘33’ is the correct answer.