At what age did the Buddha attain Parinibbana (final liberation)?

Where did Gautama Buddha attain Nirvana (enlightenment)?

Where did Mahatma Buddha’s ‘Mahaparinirvan’ take place?

Which part of the Tripitaka contains the conventional teachings of the Buddha?

Gautam Buddha attained “Mahaparinirvana” in kingdom of –

Gautam Buddha attained enlightenment on the bank of which river?