Question

Какая российская река не имеет стока в мировой океан?

Answer 1

Волга.
Она впадает в Каспийское море.

Answer 2

Russian River Without Outflow

The Russian river that does not have outflow into the world ocean is the Kuban River.

This river flows into the Sea of Azov, which is considered an inland sea and not a part of the world ocean.

The Kuban River is approximately 870 kilometers long and has a drainage basin of about 57,900 square kilometers