Among five trees, the palm tree is taller than the neem tree and shorter than the coconut tree. The teak tree is taller than the mango tree, and the mango tree is equal in height to the neem tree. How does the height of the teak tree compare with that of the coconut tree?
Cannot be determined
Cannot be determined is correct.
From the first clue: neem < palm < coconut. From the second clue: mango = neem, and teak > mango, so teak > neem.
Both teak and coconut are taller than neem, but no clue compares teak with palm or with coconut. Teak could be shorter than palm, between palm and coconut, or taller than coconut.
Since every arrangement fits the clues, the height of the teak tree relative to the coconut tree cannot be fixed.