Today's PUZZLE CLASSIC OF THE DAY

What is the largest number that can be made by multiplying two three-digit numbers together using each of the digits from 1 to 6 exactly once? Example: 134 × 256 = 34,304, though this is not the largest number that can be made. What is?

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Guess the Number: 1 to 100

Turn off the numbers until you end up with only one number.

Behind Each Other

Sierra is standing behind Giselle. And Giselle is standing behind Sierra. This doesn't seem possible but it is. How?

Four 9's and a 1 to 100

Arrange four 9's and a 1, and ONLY ONE basic arithmetic operator (-, +, /, or x) into a mathematical expression with a result equal to 100. NOTE: All 5 numbers must be used (e.g. 99 + 1 is not valid).

Covering the Hole

It is possible to cut a 3x6 slab into two pieces so that when re-arranged they can neatly fit into the 2x9 hole. Can you do that?

Eight 8's to a Thousand

How can you add eight 8's to make 1,000? How many pluses would you use for this?

Four 4's Into Seven

Using four 4's and basic math operations (addition, subtraction, multiplication, and division), reach number 7. NOTE: you are not allowed to combine digits.

5x7 with Two Diagonal Cutouts

Cut this figure into 2 congruent parts (identical in area and shape, though they can be mirrored).

Parking Lot Conundrum

Which numbered space is the car parked in?

Four Intersecting Squares

How many squares are in this shape?

Biggest Cross-out

Draw a straight line which would cross out a series of cells with the highest total of numbers in them. Start by pressing and dragging from any cell.

Basic Cross Sum

Place digits 1-9 into this simple cross so that the total in the row is the same as in the column. Reach the highest possible sum.

Isosceles Triangle Inside the Square

Each square in the grid measures 1 unit by 1 unit. What is the area of the orange triangle in square units?