If Giuseppe can make one pizza in 15 minutes and Gaetanno can make one pizza in 12 minutes. How many pizzas will they accumulate in a day if they work together? Bearing in mind that Maximus takes 20 minutes to eat a pizza and he eats all day long!
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 February 21st, 2012 | Category: Brain Riddle, Food Riddles, Mathematical |  2 guesses |  Email This RiddleIf you multiply together the number of fingers on one person’s right hand to another person’s to another person’s till you get the product of the fingers on the right hands of everyone in the world, what is the most likely product? For instance, one person has 5 fingers, and his friend has 5 fingers. The [...] Consider an arrow in flight towards a target. At any given moment of time, a snapshot could be taken of this arrow. In this snapshot, the arrow would not be moving. Let us now take another snapshot, leaving a very small gap of time between them. Again, the arrow is stationary. We can keep taking snapshots [...] February 17th, 2012 | Category: Brain Riddle, Mathematical, Real Life, Science | 2 guesses | Email This RiddleHow many times can you subtract seven from 49? At the donut factory, two bakers can bake six donuts in three hours. By this same reasoning, how many bakers will it take to bake 22 donuts in 5 hours? At a recent birthday party for a friend of mine, I pointed out the following to my friend: Eighty-seven years after you were one-third as old as you were one year ago, you will be four times as old as you were five years after you were one-fourth as old as you will be eight [...] Consider a four digit number, with each digit represented by the letters A, B, C and D. With this number, the following is true: ABCD Which numbers are represented by A, B, C and D? Find the missing number, and explain why. 25 49 121 5 7 ? 15 13 9 20 20 20
Jim’s teacher asked him his father’s name. He replied that his father’s name has 5 letters in it. His name starts and ends with 500. Additionally, the name has 5 in the middle. The second letter of the name is the first alphabet. And lastly, the name also contains the first number. What is John’s [...] What happened in 1961 that would not happen for another 4000 years? |
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