Find the number that is different from the other three: 37, 87, 73, 59

Which type of 'samas' (compound) is present in the Hindi word 'Lav-Kush'?

Read the following passage: 'Rishi-muniyon ne gahan chintan ke baad yah udghosh kiya hai - Gaavo Vishvasya Mataarah. Bharatvarsh mein sadiyon se gaay dhan aur dhaanya ki daatri arthaat ek upyogi pashu maatra hi nahin varan yahaan ke log use pavitra aur poojya maankar atyant aastha ka bhaav rakhte hain. Gaudhan ke prati aadar bhaav hamaari puraatan sanskriti ka atoot hissa raha hai. Dwapar kaal mein Gopal naam se vikhyaat Shri Krishna swayam gwaala bankar gau sewa karte drishtigochar hote hain.' Question: Who became famous by the name 'Gopal' during the Dwapar era?

Choose the correct preposition for the blank: 'Divide these chocolates ____ the students of class 8th.'

Magnesium (Mg) + Oxygen (O2) -> Magnesium Oxide (MgO). What kind of change is this?