In: when did justin bieber started his music career??

Out: 2008


In: who is responsible for spreading agriculture and iron smelting in sub saharan africa??

Out: Bantu


In: who was the first woman to became the prime minister of a country??

Out: Sirima Ratwatte Dias Bandaranaike


In: who is the president of bihar in 2017??

Out:
Satya Pal Malik