# Monthly Archives: February 2018

## DAY 59:

Today’s Challenge Your starting number is 18 and your task is to arrive at the same final answer.  There are ten arithmetical steps from beginning to end, each one involving a whole number, but the 9th (and penultimate) step is … Continue reading

## DAY 58:

Today’s Challenge Starting from 1, find the sum of the first SEVEN whole numbers that do not contain a 3, 5 or 7 as part of their number, or are not multiples of 3, 5 or 7. The 7puzzle Challenge The playing … Continue reading

## DAY 57:

Today’s Challenge Replace the 12 ◯’s below with 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 7 and 8 so all three lines work out: ◯  +  ◯   =    5    =   ◯  –  ◯ … Continue reading

## DAY 56:

Today’s Challenge Replace the 12 ◯’s below with the 12 numbers 0, 1, 2, 2, 3, 3, 4, 6, 6, 7, 9 and 9 so that all three lines work out arithmetically: ◯  +  ◯   =     6 … Continue reading

## DAY 55:

Today’s Challenge ‘Can You Pass A Simple Math Test?’ was recently published in the USA in an attempt to emphasise the importance of adult numeracy skills. It contains five multiple choice questions; just answer A, B, C or D each … Continue reading

## DAY 54:

Today’s Challenge When 2 is subtracted from a 2-digit number and the result doubled, it becomes the same 2-digit number but with its digits reversed. Only one 2-digit number has this property. What is it? The 7puzzle Challenge The playing board … Continue reading

## DAY 53:

Today’s Challenge From the numbers below, eliminate all square numbers, triangular numbers, multiples of 4 and factors of 70. 1  2  3  4  5  6  7  8  9  10  12  14  15  16  18  20  21  24  25 Which is … Continue reading

## DAY 52:

Today’s Challenge List the FIVE 2-digit numbers to have the following attributes:  are not odd numbers,  are not multiples of 3, 4, or 7,  has its digits adding up to more than 10. The 7puzzle Challenge The playing board of the 7puzzle … Continue reading