# Category Archives: brain teaser

# May 2021 Brain puzzler Solution

The integer at the top of each of these 9 rectangles is the sum of four addends contained in each rectangle. Shade the boxes containing the addends you use to get the sum. You will use one addend in each row.

Notice that the 4 numbers circled to make -2 are not the right combination.

# April 2021 brain puzzler solution

There are a total of 18 triangles:

9

3 small triangles ABC ACD ADE

3 medium triangles AFG AGH AHI

3 large triangles AJK AKL ALM

also 6 more

triangles

ABD ACE

AFH AGI

AJL AKM

3 more:

ABE AFI AJM

# March 2021 brain puzzler solution

Make three three-digit numbers that add up to as close to 1000 as possible using the digits 1- 9 only one time each.

There are multiple answers that would get 999 such as 247 + 563 + 189 or 164 + 237 + 598.

Is 1000 even possible? Here is a link to a Geogebra to help you check.

# february 2021 brain puzzler solution

The puzzles above are all about Order of Operations:

50 + 50 – 25 x 0 + 2 + 2

50 + 50 – 0 + 2 + 2

104

48 divided by 2(9 + 3)

48 divided by 2 x 12

Now go from left to right

24 x 12

288