This was a tricky one as the a, b and c are all irrational numbers.
Here is the Ziteboard for the solution and/or check out the YouTube video (or click below) for the solution to this tricky Math Olympiad problem.
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July 2026 Brain Puzzler Solution
a) add 3 add 11 so 35 and 46
b) perfect squares so 100 and 121
c) divide by 6 then 5 then 4 then 3 (the next two numbers are found by diving by 2 and then 1 so 3 and 3
d) check the differences between the numbers 1, 8 , 27, 64 all perfect cubes so the next two perfect cubes are 5^3 (125) and 6^3 (216).
Adding 125 to 103 = 228
Adding 216 to 228 = 444
e) check the differences between the #: 729, 243, 81, 27 all powers of 3 (3^6, 3^5, 3^4 and 3^3) so the next two differences are 3^2 and 3^1.
The pattern is also -, +, -, + so from 210 subtract 9 and then add 3
201 and 204
June 2026 Brain Puzzler Solution
Interactive Blank Kakuro here
May 2026 Brain Puzzler Solution
Above is the original problem that I modified for the May 2026 Brain Puzzler for part b:
If they had lost even more moisture and are now only 96% water. How much do the watermelons weigh now?
If they are 4% fruit and 96% water now the 10 pounds is still the solid part and 240 pounds is the water so 250 pounds.
April 2026 Brain Puzzler Solution
Using the numbers 1-6 one time each, build a mathematical expression that equals 456.
You may use parentheses, addition, subtraction, multiplication and/or division.
A: The factors of 456 = 24 x 19
which may help in finding:
3 x (6 + 2) x (4 x 5 – 1)
Math Confidence by Robin the Math Lady 