# Tag Archives: numbers puzzle

## Puzzle #176: Outsmart Your Teacher

This is a relatively simple puzzle from fivethirtyeight.com, a site from which I have posted many puzzles in the past. Variations of such puzzles have been posted in the past. I would encourage parents to try this with their children. … Continue reading

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## Solution to Puzzle #53: Make a Century

Addendum to the answer…Shruti Mittal sent 6 more correct asnwers – Well done Shruti!             (-1*2)-3-4-5+6*7+8*9=100           1+(2*3)+(4*5)+(-6+7)+(8*9)           1*(2+3)*4*5*(6-7)*(8-9)           1*(2+3)*Sqrt(4)*5*{-[(6-7)+(CubeRoot(8)-Sqrt(9)]}   … Continue reading

## Puzzle #53: Make a Century!

Thanks to Alok Mittal for sharing this cute problem to which there are many answers…limited only by your creativity! Insert mathematical signs between digits 1,2,3,4,5,6,7,8,9 to make an expression that equals 100. The digits must remain in the same sequence. … Continue reading

## Puzzle #50: Cat and Mouse Tale

This is a nice puzzle for children that I picked from the book “Moscow Puzzles” (Puzzle #88). See the figure below: Cat has decided to take a nap. He dreams he is encircled by 13 mice: 12 gray and 1 … Continue reading

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## Solution to Puzzle #49: The Absent Minded Bank Clerk

I surprisingly got much fewer responses than I expected, and in hindsight, the “two minute” qualifier probably scared people! Congratulations to Muskaan Mittal, a brilliant 9 year old, in being the first one to send the answer. Girish Tutakne and … Continue reading