Question

From where Ganga, Yamuna and Brahmaputra rises

Answer 1

Ganga-Gangotri Glacier (Bhagirathi), Uttarakhand
Yamuna-Yamunotri Glacier, Uttarakhand
Brahmaputra-Angsi Glacier in Himalayas in  Tibet, but enters India in Arunachal Pradesh

Answer 2

Ganga from Gangotri glacier.
Yamuna From Yamunotri glacier.
Brahmaputra from Angsi glacier.
ALL ARE IN HIMALAYAS.

If it helped, mark it as brainliest.
Follow me to get the most simplified answers for your questions.