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    2024- 2025 

     

    Archived Problems of the Week

    Solutions
    The First Olympics The first Olympics took place in 1896.
    Missing Numbers Triangle There are 5 different sums that work. The sums could be: 17, 19, 20, 21 and 23. For examples, look here.
    Library Books Valeria could have borrowed 2 or 3 books.
    How Old Am I? The child could be 14, 25, 36, 47, 58 or 69 (and the father would be 41, 52, 63, 74, 85 or 96.)
    Counting Candy There could be 19, 24 or 29 chocolates.
    Walking Club It is possible for the Walking Club to reach 10 miles before June 1st. Without missing any Mondays, they'd reach 1 mile every 2 Mondays, so it would take 20 Mondays to reach 10 miles. Let's see when they actually reach it.
    Candles on a Cake Jamie is 21 years old, with 21 candles.
    How Many Quadrilaterals? We found 68 different quadrilaterals. Are there more?
    The New Year is Here There are 14 different dates in 2025.
    How much older? The University of al-Qarawiyyin is 1,166 years old. Harvard University is 389 years old. And the University of al-Qarawiyyin is 777 years older than Harvard University. 
    Target Score If 4 darts landed in the black circle (17 points) and 2 darts landed in the white circle (16 points), Mandy would receive a score of 100 (17+17+16+17+17+16=100).
    Shape Numbers The circle is worth 5.
    Postage Possibilities
    Four-Sum Square The answers in the top row are: 4, 2 (left to right), 3rd row: 4, 1, 5th row: 3,5
    Would You Rather? The answer depends on the width of the dimes. 
    Who Has More? Mr. McCormick has 25 Cheez-its and Ms. Hernandez has 18, so Mr. McCormick has more.
    Dumplings, Noodles or Sushi?