Problem: When was the Indian National Calendar first used?
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A: 22 march 1957

Problem: Which actor's film roles include Charlie Chaplin and Sherlock Hoimes?
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A: robert downey junior

Problem: What is the name given to a randomly derived change to the nucleotide sequence of the genetic material of an organism?
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A: mutation

Problem: The American woodchuck or whistle-pigis also known by what name?
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A:
groundhog