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0 / 60 seg.
All the girls of Mary's class are standing in a row. Mary is the 11th girl from both ends. How many girls are studying in Mary's class?
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Clue
21 GIRLS. 1 2 3 4 5 6 7 8 9 10 11 10 9 8 7 6 5 4 3 2 1
IT WOULD TAKE 5 MINUTES. EACH MACHINE TAKES 5 MINUTES TO MAKE ITS WIDGET. THEREFORE, EACH OF THE 100 MACHINES WOULD HAVE FINISHED MAKING ITS WIDGET IN 5 MINUTES
THE PROBABILITY IS 0.5. THE POSSIBILITIES ARE (GIRL, GIRL) AND (GIRL, BOY). SO THE PROBABILITY THAT BOTH CHILDREN ARE GIRLS IS 1/2 OR 0.5
3 POUNDS. SINCE 1⁄4 CAKE WEIGHS 3⁄4 POUND, AN ENTIRE CAKE WEIGHS 3 POUNDS
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