Place numbers (1 to 9) in the blank circles. Each number can only be used once.
Each sector’s number is equal to the sum of the three numbers next to its sector. Find the missing numbers.
June 2022 Brain Teaser Solution
All posts by mathconfidence
May 2022 Brain Puzzler Solution
Q: A mother told her daughter “I was thrice as old as you two years ago. In 14 years, I will be twice as old as you.” What is the current age of the mother and daughter?
A: The mother is 50 and the daughter is 18.
Two years ago, they were 48 and 16.
In 14 years, they will be 64 and 32.
Here is a link to a solution on YouTube: https://youtu.be/_RWsx9gU_XI
April 2022 Brain Teaser Solution
March 2022 Brain Puzzler Solution
A: 454585
The first two digits are the product of 9 x 5
The third and 4th digits are the product of 9 x (the other 5)
The 5th and 6th digits are 45 + 45 – middle digit = 90 – 5 = 85
February 2022 Brain Puzzler Solution
Q: You are painting a square wall that is 12 feet by 12 feet.
When you are halfway done, the unpainted part of the wall is still a square that measures 12 feet from top to bottom by 12 feet from side to side. How is this possible?
A: A: It’s a square within a square. The unpainted square is nested within the larger square like this:
Math Confidence by Robin the Math Lady 