1. What is the Longest River in Sri Lanka, Walawe, Mahaweli, Kalu, Malwathu, What is the highest mountain in Sri Lanka, Pidurangala, Namunukula, Piduruthalagala, Sigiriya, Who is the inventor of Computer, Donnel Trump, Charls Darvi g, Charls darving, Charles Babagges, 15-10+25 = ?, 40, 30, 35, 45, What is the most gas in the Atmosphere ?, Nitrogen, Oxygen, Methane, Hydrogen

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