Monthly Archives: October 2017

DAY 305:

Today’s Challenge Another typical MATHELONA challenge taken from our pocket book of number puzzles. Your task is to make all three lines work out arithmetically by replacing the 12 ◯’s with the following group of 12 numbers.  Can you successfully complete this? 1   … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 304:

Today’s Challenge One to test your basic adding skills.  What is the total of all twenty-two separate digits when listing all whole numbers from 10-20 inclusive? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 303:

Today’s Challenge Play the numerical part of our exciting Even More Possible board game by attempting this number puzzle. Using 1, 5 and 10 once each, with + – × ÷ available, what are the EIGHT different even-numbered target numbers that are possible to make … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 302:

Today’s Challenge Using 2, 4 and 7 once each, with + – × ÷ available, list the ELEVEN different even-numbered target numbers that are mathematically possible to make from 2-60. The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 301:

Today’s Challenge This number trail contains ten arithmetical steps. Start with the number 40, then:  subtract twenty-six  ÷7  ×10  30% of this  multiply by 3  two-thirds of this  ×12  double it  add fifteen  ÷3 What is your final answer? The 7puzzle Challenge … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 300:

Today’s Challenge Here’s a MATHELONA challenge for you to try based on the ones found in my pocket book. Full details of the pocket book can be found by clicking MATHELONA. You must make all four lines work out arithmetically by replacing the 16 … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 299:

Today’s Challenge Which is the only 2-digit number to have exactly seven factors? . . . and an additional challenge for the number puzzle enthusiast; which is the only 3-digit number to have exactly seven factors? The 7puzzle Challenge The … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 298:

Today’s Challenge Read the following facts to work out which number I am today:  I am a 2-digit number,  One of my digits is odd, the other is even,  I have six factors,  I am a multiple of 5 but … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 297:

Today’s Challenge This is a typical number puzzle from Kojiro Tominga in Yokohama, Japan. Using 5, 5, 5 and 5, with + – × ÷ available, can you make the target numbers of 5, 10, 15, 20, 25, 30 and 35? The 7puzzle Challenge … Continue reading

Posted in 7puzzleblog.com | Leave a comment

DAY 296:

Today’s Challenge Using any five numbers from 1-5, with + – × ÷ available, can you find two different ways of arriving at the target number 86? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing … Continue reading

Posted in 7puzzleblog.com | Leave a comment