Medium
Math and Logic
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
Answer: Nesting cups
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).