Think you're smart?
Which desert is the largest in the world by area?
What is the main language spoken in Brazil?
Which scientist is known for discovering gravity?
What is the currency of South Africa?
Which blood type is known as the universal donor?
What is the tallest mountain in North America?
Which Shakespeare play features the characters Rosencrantz and Guildenstern?
Which part of the human body has the smallest bones?
Who is the Roman equivalent of the Greek god Zeus?
Which planet is known for its prominent rings?