Multiple Calculations

/by

Place the digits 1 through 9 in the empty boxes in a special way.

Read more

Common Digit

/by

Find the one-digit number that is just like all the others.

Read more

Coat Check

/by

How many times will Allison write the digit 3?

Read more

Apples and Oranges

/by

They say you cannot add apples and oranges. You do in this puzzle! Can you break the code?

Read more

Filling Bases

/by

Find the missing base numbers.

Read more

Magic Pairs

/by

How many pairs of “magic” numbers exist?

Read more

Clocking the Order

/by

When will the digits of a digital clock be in strictly increasing order? In strictly decreasing order?

Read more

Train Tracking

/by

Follow the pattern and determine the number of people who get on and off the train.

Read more

Summing Evens

/by

Find a way to sum a set of even integers.

Read more

On Target

/by

How many darts will Seong-Chang need to throw to earn a specific number of points?

Read more