Also question is, who killed dhritarashtra in Mahabharat?
Bhima
Likewise, how did Dhritarashtra had 100 sons? Actually, Dhritarashtra had 101 children . One hundred sons and a daughter called **Dushala** from Gandhari, also he had another son **Yuyutsu** from a Vaishya servant Sukhada. during her early years Gandhari served maharishi VedVyas with utmost devotion and in return, she received a boon of 100 children from him.
Likewise, how did dhritarashtra Gandhari and Kunti die?
Later years and deathAfter the great war of Mahabharat, the grief-stricken blind king along with his wife Gandhari, sister-in-law Kunti, and half brother Vidura left Hastinapur for penance. It is believed that all of them (except Vidura who predeceased him) perished in a forest fire and attained Moksha.
How did vidur died?
He died on the arms of Yudhishthira, who came to visit him during his last days, and before his death, he gave his power to his nephew, citing that both were the parts of Dharmaraj. Within a month after his death, Dhritarashtra, Gandhari and Kunti perished in a forest fire.