MediumMath and Logic
10 pennies in 3 cups, each has odd number.
Riddle
10 pennies in 3 cups, each has odd number.
Choose an answer
A.Not possible
B.Cut a penny in half
C.Use 5 cups
D.Nesting cups
Hint: It's a 2-word phrase with 11 letters, starting with "N".
Answer
Nesting cups
Why this is the answer
Put 1 in the first, 1 in the second, and 8 in the third... but wait, the trick is nesting. Put 1 in cup A, 2 in cup B, and nest B inside cup C (which has 7). Now C has 9 (odd).
This riddle is filed under Math Riddles and rated Medium.