# Monthly Archives: December 2020

## DAY/DYDD/GIORNO/NAP 366:

The Main Challenge You are playing Roll3Dice and have just rolled 2, 5 and 6 with your three dice. Using these three numbers once each, with + – × ÷ available, it is possible to make SEVEN target numbers in the range 1-10, as indicated below. Can you … Continue reading

## DAY/DYDD/GIORNO/NAP 365:

The Main Challenge You have rolled 1, 5 and 6 on your three dice: Part 1: What is the highest target number in the range 1-30 that is possible to achieve using these three numbers once each, and with + – × ÷ … Continue reading

## DAY/DYDD/GIORNO/NAP 364:

The Main Challenge You have been given a starting number of 7. Carry out the following 28 calculations to achieve the final answer. Will you have the stamina to get it right? Here we go! Start with 7, then: +19 . … Continue reading

## DAY/DYDD/GIORNO/NAP 363:

The Main Challenge Your task is to make the target number of 15 by adding together five numbers. You are limited to using 1 to 5, but these can be used any number of times in each calculation. One such … Continue reading

## DAY/DYDD/GIORNO/NAP 362:

The Main Challenge This a number puzzle similar to my Mathelona series of challenges, but much more difficult. Your task is to fill all 24 gaps below with the numbers 1-24. Each number should appear once each and ALL eight lines/equations must … Continue reading

## DAY/DYDD/GIORNO/NAP 361:

The Main Challenge You’ve rolled the numbers 2, 2 and 2 with your three dice. Using these once each, with + – × ÷ available, which FIVE target numbers from 1-10 is it possible to make? The 7puzzle Challenge The playing board of the 7puzzle game is … Continue reading

## DAY/DYDD/GIORNO/NAP 360:

The Main Challenge Players must multiply two numbers together, then either add or subtract the third number to achieve your target answer of 25, so the formula is (a×b)±c, where a b c are three UNIQUE digits from 1-9. One … Continue reading

## DAY/DYDD/GIORNO/NAP 359:

The Main Challenge . . . involves number combinations and addition, both necessary to master if players are to successfully complete the fabulous Kakuro puzzle. As well as 9+8+7+1 (or 9871), list the five other ways of making 25 when adding together … Continue reading

## DAY/DYDD/GIORNO/NAP 358:

The Main Challenge The American maths card game, 24game, can be both frustrating and addictive. Your task is to arrive at the target answer of 24 by using the four digits shown in each of the three groups below, just once each … Continue reading

## DAY/DYDD/GIORNO/NAP 357:

The Main Challenge An 11-step number trail involving all four arithmetical operations. Start with the number 8, then: multiply by 5 25% of this –5 add twenty-two 1/3 of this ×4 subtract twenty-four +9 divide by 7 add three ÷3 What is your final … Continue reading