@SqSehrish Simple: 14 computed as follows: 1 (man/father) + 11 (sons) + 1 (each son’s sister) + 1 (wife/mother)
or only 13 if the wife/mother is presumed dead as the premise didn’t say … A man “and his wife (the mother)” has 11 sons (should have been “have” if the wife were alive)